Haven't gotten to play online yet but unlocked everyone nondlc. Games fun, they dumbed it down control wise. you got your light medium and heavy, but they are 1 button each (instead of 2 [kick][punch] like the older mvc's). Launching for air combos' been made simpler too; everyones got the same launch button (A on the 360). Dante is overpowered, Hulk has been given a lot of steroids and Haggar is beast.
Still....after a long time of playing mvc3, you can't help but go back to the second one lol. I guess I had very high expectations of this game. Everythings been made easier, and the character list has been shortened. Good game nonetheless.