Eh, I'd have to be the one to disagree here. To be fair, MvC3's roster ended up being undermined by the fact that TvC came first, and already gave me the likes of Viewtiful Joe, Frank and Zero, so it was already going to be a hard sell for me to "wowed" all over again.
But with no Spider-Man villains, too many mutants, not much from Cosmic-level Marvel, middling Darkstalker picks (sorry, Lei-Lei fans...) and no "what should have been slam dunk" picks like Gene, X or Jon Talbain, my enjoyment from the roster pretty much came entirely from Team DMC, Super Skrull, Firebrand and Rocket Raccoon.
So with that said, anything that Infinite stands to do to shake things up a bit, and even jettison a few things, if necessary, is just fine by me.