The funny part is that catering to competitive players is exactly what (U)MvC3 did, and probably what makes it so hard to grow the competitive scene.
Like you have a game where Phoenix Wright can team up with or face off against She-Hulk, among other ridiculous matchups, and all we get are some one-liners and a few lines and pictures in the endings?
I used to not think story modes, single-player content, or other things like that were that important in fighters, but now I realize that making a bare-bones game with just arcade/versus/training/online, especially one full of well-known characters, effectively cuts out everybody except for those who spend a lot of time on fighters anyway.