I agree that pentas should only give +5 health. But not the biggest fan of capping pips to 18. Maybe just make the cap at 2 full bars, 1 red and 1 silver (not sure how much health that actually is) and don't go into gold. Or at the least cap it at 21 (Ancient set + penta).

assuming Zeddy is your GM
Well then I still ask for a 21 cap. 18 seems too low.

I actually think the limit should be 16.
No-one takes Scarlet Shield with Ancient Plate, and this would be a nice kick to the knees for taking a second Penta Heart trinket.
I mean, there's a cap for status resist and defense, and there's a cap for ASI, CTR and Damage, (No-one takes a second Elite Slash Module when they're wearing full Skolver!) all of which you have to manage your Sprite Perks, Armor, Trinkets and UVs for, so why is it that anyone who couldn't be bothered doing this can just stack hearts on themselves and be more prepared than people who actually prepare?

Probably because of vitapods and natural armor bonuses, which make all health buffs less visible-- if I have a +12 vitapod, then my 2 penta heart trinkets are only doubling that, which is on top of my natural defenses. Thus, the increase as a percentage will always be less for health and will carry diminishing returns when viewed as a percentage.

Natural health with 5* armor = 4+4+a base amount I think 3? = 11

With a +12 vitapod, this is 23 health- meaning that even with 2 health trinkets and a sprite perk, you still won't be able to even double your health. Other means of getting excess health aren't nearly as viable.

The other issue with capping it would be that at +3 health per level, it would be hard to add extra levels on to the end of the game.

Why would you even want to add a hp limit ? Vitapods increase your max hp and there are silver and gold bars, so why add a hp cap ?(we can only reach gold hp with full ancient, scarlet, 6 hp from pets, and both heart pendants.)

If you have problems in lockdown, then think about a lockdown change(maybe allow players to select any gear with any uv for ld/have all the slots for LD only).

This hp limitation wouldn't allow knights to use 21 pods. Imagine people doing darkfire vana without pods. The trinkets can be very useful(and very expensive since they are a pvp reward) if you don't get any pods. Most tier 3 monsters do a lot of damage, so high health pool is needed.

except vitapods are found anywhere. even if you join a DFSC party at the terminal, the derpbillion monsters and boxes will surely give you a vitapod and pills to fill it. the chances of not finding one is so little that you can still find two vitapods of the same size even though it shouldn't happen.
if you use the "no gold health" argument, I'll copypaste:
while we're at it, can we ask for a subsequent overlap revamp? since max health will go down, how about bring the max red pips to 25-20? so that more people can get gold health instead of going into a shadow liar to get 2 gold pips.

^^ was just about to say that, but Zeddy beat me too it.