They're not bad as suggestions, but some wouldn't work in the game's environment. Survival mode would be great, but perhaps they drop a token after every wave? A token and a basic healing pill? Capes are a great idea, and definitely doable. A shadow cape on obsidian mantles would look wonderful. The bomb could work if it only summoned one missile (think of the mortafire's bomb, but a range that gets bigger per star level. This could be our elemental blast bomb?).
Now for some criticism; auto target needs to stay. Anyone who uses the arrow keys would be completely thrown out if that was removed, and don't forget those who lag! People complain in lockdown because they are worse than the player they're up against, and want to bring them down. Lockdown will always be that way. Special abilities on gear would be neat, but is really unnecessary, especially since there's a predefined way to do things. Autoguns work fine as they are. Some weapons will always work better than others in lockdown, that's why everyone wears wolver and kat lines, and chaos, and carry a flourish variant.

Sorry for the block of text, I'm on mobile (and you snuck more suggestions into the original post during that time, dangit touchscreen!)

Removing accessories from armor is a feature that can ONLY be done by GMs, and should remain as such. If you don't want to put a particular accessory on an armor, make sure you know what you a doing before you click.
And with putting accessories back into circulation, consider this; a piece of armor with a crest of winter on it is sold to a rich fellow for the price of the armor plus a small increase in price for the crest but is not equivalent to the price of the crest by itself. then the rich fellow uses his blade that he got with his richness money to take the crest off and sell it for full price, effectively making him even more richer. This method could only be done by someone who is rich enough to not only own a scissors blades, but also buy a piece of armor that has a very high end accessory attached to it, and would allow him to net a high profit while spending a relatively low amount of money on each sale. Thus, making the rich richer.

And also, being sarcastic to the degree that Bitsbee was should not be offensive, it's just his personal way of speaking. it's not like he is directly insulting you or anything

EDIT: i used arrow keys for almost a year when i first got this game over 2 years ago, and it was decently hard to play without auto target (not impossible, but the option should still be there for people who can't play that well)

Gunning with arrow keys might be difficult though. I can't talk from experience on that, but I would imagine it to be frustrating. Honestly, I could adapt to not having autotarget, but I use it in my playstyle. I know many players suffer from lag, and the only reasonable way to take autotarget away would be to get more servers and have a higher average ping among players, which won't happen because money.

"And also, being sarcastic to the degree that Bitsbee was should not be offensive, it's just his personal way of speaking. it's not like he is directly insulting you or anything"

Yeah, sorry if I sounded like a butt head.

^my new catchphrase, pay it no mind

Hades, taking auto target away form players would not improve gameplay. If they want to practice their aiming then they are completely free to turn off the feature in the options menu, but forcing them to play without it and not giving them a choice would not solve anything. For some people, no matter how much practice they have they would never be able to reach the level of accuracy of some of the pro players in the game, and this would put them at a great disadvantage in both PvP and PvE. And also, auto target is a feature that is meant to help players who are not the best at aiming to reach their target but does not give 100% accuracy. Using it can be used to help teach players how to aim with minimal assistance until they can manage on their own.

Just something to let you all know, it is 100% possible to have better aim with no AA than a person who actually uses it.

**Solo "survival" mode
I would love it if I could farm krogmo coins from something like this.
Otherwise, sure sounds like the mission "The Gauntlet" with a leaderboard.

**Gear with special abilities
Scissors - Definite no. Removing acc's from items has been a GM only thing (as said from above). Perhaps a discount for adding acc's is a better option. Wait, that's free already you say? Eh, lets just leave it as a cosmetic clone of another item - Like all the other cosmetic clones that are out there.
Wrench Wand - Its special is the left handed knockback. Anything that can heal indefinitely with no cost seems to break games. Tack on another 5 minutes to each room in a shadow lair and your party is at full health? I disagree.

Remove AT completely.
No. I agree that its a crutch for new players and an advantage for lazy people in LD, but not a good reason to remove it. I don't use it because it makes my aim worse.

New Acc
As in a new acc spot or just a new thing to fill a current spot? Either I don't like. I much more prefer devs working on the awesome new content rather than something flashy. I was kinda disappointed to see the obsidian stuff show up as a costume instead of a nice new armor set.

New bomb:
Missile strike would seem OP for a single attack bomb. Instead, for bombs I would much more prefer claymore (aimable) style bombs. I forgot where it was originally suggested, but could probably search the forums a bit for it. Some people use it for a lazy advantage but the dangerous people are the ones that do not use it. Otherwise, LD player will always find something to complain about.

Fix Autoguns to be useful in LD:
No. Autoguns are OP in a couple situations, and useless in others. LD is a useless situation. Bosses are an OP situation. If we were to buff one wep to be more useful in LD, we should also buff the cutter sword lines and grav bomb lines (you can dash/striker boost out of them). All weapons are situational - autoguns are just not very useful in LD.

**Staked GLD/1v1 Matches
No. I think this would create a tremendous increase of scamming. Its a fun and risky mechanic, but this game supports players down to an age of 13. Some countries may take these "staked" matches as a form of gambling which is illegal for this age in some countries. I am not in favor of this mechanic being added.

Add monetary rewards for achievements
If by monetary rewards, you mean bound acc's like the ones from missions - by all means.
Otherwise, it would bring rise to the mule/alt problem they had with the timed mist generation - except just a bunch new accounts made to farm achievement rewards.

Its a matter of preference. I'm not much of a fan for cosmetic things and LD. Most of your suggestions would take developer time away from the things I want such as new bosses, more developed storyline, and more events like apocrea - so yes, I'm not too fond of them. The survival one I like the idea of having an indirect PvP. If it means I get to avoid LD all together, I like it even more.

In the end, they are just my opinions. Ultimately you just have to get OOO interested in your idea - not the people that don't like them. Just look at all the people up in arms against the supply depot sale. Merchanters would have torn apart any thread that suggested something like that while newer players would praise something like that happening. Anyways, I'll stop venturing off-topic.

My main problem with AT is as you said; it rewards laziness. Doesn't apply to everyone who uses it, but people can easily knowingly abuse it and outperform others who actually make an effort. There's no point in talking about it anymore, it's already a dead horse. But I will tell you that it does not help high latency players; by the time you try to lock on the target is already outside the area of effect. It does however mean it's nigh impossible to dodge AT toothpick buttonmashing. Really ruins the game for me as a perma-1-bar. :/