I want them to commit to the neutral heavy game we were promised. This means a nerf to a lot of top tiers like Scorpion, Erron, Geras, etc. They are in effect playing a different game than the rest of the cast because they basically by-pass neutral and have free ins. Yes, they can be dealt with but they suck to play against and they are very common picks. It doesn't matter if 20 characters are more or less balanced, when 5 of them are not, and those 5 are what get picked. Again, the top tiers can be dealt with but it's uphill, annoying, and most importantly it contradicts the game we were promised.
Aside from that, fix hitbox issues on D'Vorah, give Johnny KBs that he can actually use, and then fix up Kotal and Shao Kahn (not sure what they need, just know they need help.)
Game is close, very close to being damn near perfect, but if they are going to let a handful of characters just say no to neutral, or if they buff the whole cast to play like that I will be disappointed. I hate it when developers go backwards on what they tout a game to be about. MK11 is supposed to be neutral heavy let's have it!