I had completely forgotten about the scarlet shield, and I was even using it just the other day. Go me.

The scarlet shield itself is fine where it is, but if we made a similar shield line that was a full 5* version for a medic update I would say also make the scarlet shield line become extended. Essentially the shield could give us the elemental defense for poison resistance, like the rest of the proposed medic line gives.

The defib does deal shock on the standard hits, but the point of the charge is to shock things. The mist cloud isn't a 100% chance to shock, it's the actual physical plates during the lunge. This allows the lunge to have a fair amount of "cooldown" from the attack as your target is shocked and interrupted. If you're going into a shock-slime depth with this weapon that's your strange choice not mine.
In other words, the charge creates the greaver-esk cloud, the standard hits inflict shock. Granted, the standard hits won't be causing shock always, but they will after a while of swinging.

The homing projectile is more of a gimmick than anything else. Makes the weapon a completely different type of weapon than a flourish. The homing won't be too extreme (i.e., you can't just spam the charge attack and hit people), but if your target dodges to the left or the right it's supposed to track and stick into them. Fiends and beasts do the dodges, hence that whole reasoning.
But hey, this weapon isn't a wide-swinging flourish, so it'll be harder to use as a main lockdown weapon. The charge attacks will be pestersome to some people, but it's not like people even try to avoid the poison status, even if it severely disables them. Only change that'd have to be made there is making sure the needles don't home in on cloaked recons.

My thought process is that medics should have poison resistance because of the whole "be clean as a doctor" thing. You could give them sleep resistance too, but again, my suggestion isn't to bring back sleep, it's for medical gear. It'd just be a great opportunity to revamp and reintroduce sleep.

Having any gear that resists all resistances in an opposite-to-chaos sort of way would require debuffs that are opposite-to-chaos. Unless you wanted the vitasuit to resist all statuses with "low" all around, it isn't going to work out too well. The gear already grants an HP boost, and it doesn't have the negatives that come along with ancient plate. I don't want medic stuff to replace ancient plate, rather it be a choice for someone who wants to move normal speeds while retaining a fair amount of HP.

You sort of play with the basic boosts when you're making an armor. A 5* armor at level 10 is going to have +5hp, normal and another type of defense, and resist a status or two, with no damage boosts.

Giving +2 to CTR and DMG is balanced in terms of numbers on the gear (i.e., +12 bonuses), then -2 to 5 statuses (i.e., -10 bonuses). Then, the base defense is dropped from 5* defensive armor to 4* defensive armor, with is another -1 to bonuses for each defense bar. (i.e., now at -12 bonuses).
Now, chaos has both +12 and -12 in terms of bonuses. In terms of designing gear, that is balanced. If you are a good player however, all of those negatives are moot so it makes chaos seem like the most overpowered gear in the game.

Now let's look at ancient plate for comparison. Ancient plate removes a secondary defense bar, and instead adds a double-wide normal defense bar. We're at +0 at this point. Then, we add +3 HP to the player, so we have an additional +3 to bonuses. Then, we add +4 to stun resistance, giving us an additional +4 to bonuses (+7 in total now). Now, we have -4 to sleep as well, so that'll be -4 to bonuses. Then, we have -1 to ASI, so that's -3 to bonuses. Lastly, we have the MSD: low, which is essentially -1 or -3 to bonuses.
So ancient plate is at -1 or -3 in terms of balancing gear if you take it that sleep is factored in. If you take sleep out, it's actually in the positives. Take that to chaos' +0.

Game design wise, chaos and ancient plate are very similar in balance. However, to an experienced player, defensive abilities will not matter, making both ancient plate's strongest points (HP boost, high normal defense) completely irrelevant.

Why am I saying all this? Well now let's take a look, game-design wise, at the vitasuits. The version I recommend would be +2HP, +4 poison, +4 sleep (if we get it back). In exchange for the +6 or +10 on there, I remove specialized defense. Not sure what I should weigh that value at, but it can't be more than a -8 for bonuses.
So now we either have the medic set at -2 or +2 on bonuses. It looks weaker because it has overall less boosts, but in turn has less weaknesses.

Now, if we were to add a +2 to status resist on every part of the armor...
+2HP, +2 to 5 statues (+10 to bonuses), now we have +12 bonuses. Taking away the secondary damage will, at most, take away 8 of those points, getting us to +4 territory. This gets even more out of whack if you want to add stun and sleep to the equation, or increase those status bonuses by one point, or even make them have full resistance.

From a design standpoint, the armor is very unbalanced under our current mechanics. At worst you'd have +22 as an armor part, at moderation +14, and best +4.

So I say it again, you would need debuffs in terms of numbers equal to the buffs given, or at least close within range. If you just protected against the big 4 (fire,shock,poison,freeze) at +2 each, then you could see the resemblance of balance, however it might drop the health boost of the armor instead. Perfect balance would be without the health boost, but perhaps this could be a branch off at 5* and drop the health boost to +1? And call that version the "Field Medic Suit" and "Field Medic Cap".

Game balance is completely different from gear balance. The game doesn't know what lag you have, what your framerate is, how long you've played the game, etc. (It can track some of these things, but again, make a new knight on a new machine and poof! Completely new stats despite however long you've ever played before.

What my previous statements were for was that adding statuses of all kinds on any gear is as unbalanced as chaos. If you took it as "chaos gear is balanced so let's go crazy", that wasn't my intention. Apologies for anything of that sort.

Spiral Vitasuit stuff I can see having some other extra gimmick to it, as we're taking away half its defense for extra HP and increased normal defense. I do dig the idea of a 5* spilt that has +2 to poison shock fire and freeze, but at the cost of part of the health penalty being dropped. The line leading up to there should focus on poison and potentially sleep. One of the strong points of this armor would be, early on, it would be one of the two armors that naturally resist sleep, and if we had this alongside a sleep reintroduction, it'd be something to look into.

If you have any ideas for gimmicks, I'd love to hear them. Something old such as "CTR: low" universal per piece, or something new such as "status infliction chance increase: low" are both fair game for the suggestions forum.

I understand that chaos and black kat are both their own problems. My suggestion doesn't have anything to do with them.

Using a similar situation, if you have a pokemon with stupidly high defense/sp. defense and HP, but super low attack/sp. attack and speed, it's going to be about as balanced. Only reason I brought chaos up was that having an extreme offense and an extreme defense without penalties in the other side is really bad. If you're going to have every status resistance, you need to have heavy offensive penalties, which the Spiral Vitasuits/Safety Caps don't have.

Notice I said it would have stupidly high HP as well there Holy-Nightmare. Similar to how Spiral Knights defense works, if you have massive defense but next to no health, that defense won't save you. It would be closer to if Shedinja was only weak to fire and had hundreds of health - if you don't have a fire attack anywhere then this thing will be the end of you.

And you're trying to tell me that having more than two or three statuses on a single piece of armor is OP.
OP, not exactly the word I'm trying to go for. Out of place is more like it. (Which, coincidentally, can be shortened to OoP)
For the clockworks, medical gear with status resist in all categories will be useless because there's always a better way to play the levels, be it through proper defense, proper defense + proper status, or offensive gear. Remember, the vitasuit/safety cap only are helpful when the player gets hit, thus an experienced user will get no benefit from them.

In lockdown, medical gear with status resist in all categories nullifies status bombers, and makes it even easier for a striker that uses either chaos or black kat to nullify their weaknesses. With +4 to each status, it becomes the secondary armor for anyone who can invest in two medium shock UVs(or +6 in the case of BK or chaos). With +2 to each status, it works a bit better, but it nullifies chaos' biggest weakness while giving them even more health. It's not an expansion onto gear, it's the gear you should get after you get chaos as a new player so you can mix and match higher damage with higher survivability. You don't get the defensive gears/correct offensive gears + uvs to make a status walker set, you'd get this medic gear.

So I'm not saying that medical gear would be overpowered with all statuses on it. I'm saying +4 to each status on armor is both useless in the clockworks, and makes our PvP minigame even more out of the loop. With +2 to all the main statuses, or even +2 to fire, shock, freeze and then a +4 to poison, it's still a little out of whack, but more manageable. I really do like the idea of having the split at 5* to a "field medic" set that has +2 to fire shock freeze and poison, but having +4 on all of them lands you in sadsville.

I bring lockdown in as a showcase. Clockworks it's better to have high amounts of resistance to statuses with matching defenses. In lockdown it's better to have high amounts of resistance to statuses, but only secondary to your damage output and health boosts. Giving up damage boosts in lockdown is nothing compared to giving up ASI in lockdown.

My point was that +4 to all statuses is not helpful in the clockworks, nor is it good for making players make new gear for the game. You said all statuses before, that includes stun and curse. Where in the clockworks is +8 to poison, fire, freeze, shock, stun, and curse going to be helpful? On the same note, where in lockdown would that not be helpful? Lockdown is its own beast to tackle, but my point is that +4 resistance (max status resist per piece) has little practical use in the clockworks, has too much use in lockdown, and hurts part of the base of Spiral Knights that is collecting a wide arsenal of gear for every occasion.

Again, +2 to the big 4 (shock, fire, freeze, poison) would be doable, and even with an added bonus on that piece. I feel a CTR: low (universal!) would be do-able, potentially even having CTR: be a staple on the whole line, the supreme line having CTR: low, +2 HP, and poison/sleep resistance, while field medic could have CTR: medium and +1 HP, but more varied status resistances(or with values switched up more, apparently I can't balance gear without large amounts of condescension from a statue*).

The point of medical gear I suggested was not to make anything new to the meta, but rather add new tools to play with. A defensive player might like their movement and attack speeds to be unhindered, but love that extra health. Bam, medical gear. Some players might find themselves walking over traps too much, but again, love that extra health. Bam, field medic gear. Expanding our gears is a better option than outright replacing them.

* I do love the feedback hidden inside the statements believe me, but throwing a point out the window because you have something personal against it (ie. "Did you seriously just bring lockdown into this balance discussion?") isn't going to push anything forwards. I'd prefer to have more ideas on how to balance something than sticking to the first thing you said and not budging.
Is Poison/Sleep resist not enough? Cool. Is every status too much? I can see that. Perhaps Poison/Sleep at +3, fire/freeze/shock at +1, and CTR: low. Seem a little out of whack? How about +33 defense to all damage types? That seem odd? Hmm, let's keep thinking of ideas now shall we?