I hope they just add to the cast rather than taking away and swapping in new ones. Ivy will be different as always and oddly I'm ok with that (assuming she doesn't get the SC:BD treatment). Hope Rock and Mina get some serious loving and some new mechanics rather than just improving their moves. They have a short move list, I'd like to see new tools.
I also want to see step, vertical tracking, and steppable horizontals fixed. Step needs to be a lil bit better and we need the horizontals and verticals to make sense. B should not be the anti step button over A.
Ummm...Hilde should have 1 leg, an eye patch, and be on crutches...I might consider her balanced then.
They should really put forth the effort to make a GOOD tag team mode. It would really add a lot to the game and its appeal.
I just pray they don't go all apeshit on the casual crowd stuff like they tend to do and forget about glitch fixing, balance, and reliable online.