I'd really like to see them fix the mids-whiffing-on-crouch-block issues, which I think can only be done with a patch.
They are extremely well documented and wouldn't be too difficult to fix... and would help out certain lower tier characters a whole bunch......... >.>
Other than that, fixing things that are blatantly dumb (trident rush chip/meter build, OH tele splash area and some stuff with orbs, etc).
I don't think it would be unreasonable to make all the 50/50 vortexes in the game unsafe on block so that a correct guess actually grants you a punish, but that's a separate matter.
I also think one of the biggest hindrances to this game is inconsistency. Some characters have to completely change the timing of their execution in certain scenarios and matchups while others function without a hitch. Makes the game alot less approachable because it's a lot more to learn unless you play someone super
aquatic braindead.
The further we take the discussion, though, the less likely things would be to get done. If they are at all to begin with...
I like playing the game and enjoy Joker alot (apparently I'm a masochist), so as long as there are people to play with and I have the time to spare, I will continue supporting it.