I signed up after I hearing Odashima mention that he will address the game pacing in SC5. Almost brought a tear to my eyes.
I stopped playing SC4 and went back to playing SC3 because it was just too slow. Something about that slow speed made the game made me feel very unengaged...
other things I want to see are-
Edge Master- I know there are others that basically substituted as edge master but I want to see edge master himself in the game once more.
Make Raphael play like he did in SCII again. to me this version of Raphael is the most fun character to play in the series entirely.
Classic character costumes returning- Kind of like the Dead or Alive series where characters have outfits that they have worn from previous games.
Take out Critical Finishes- Just have character stunned when their Soul Gauge is broken, and you are free to do what ever combo you can think of instead.
allow custom Music on the PS3 version- People are generally really happy when custom music is allowed in their fighting games. also, it would be fair to make it equal to the Xbox version which would have custom soundtrack automatically.
Also, bring back attacks with push-back properties when they are blocked. This added more distinction between moves and allows more spacing strategies.
and lastly, consider Revenant as a playable character
edit: I just played my copy of SCII after a long time and I noticed that when character side step moves they shift thier upper body in the direction away from the attack.
That is a really cool effect. It makes you think "whooah, I really dodged that one". It's too bad they didn't keep that in SC3 and SC4.
Oh! and also add an art gallery with a decent amount of official artwork but also showcase some guest artist. I love game art and I would honestly be more excited to see highly talented manga artist drawing SC character over having guest characters appear. I'm thinking about how Blaz Blue II handled their art galleries and think it's pretty ideal.