Okay then, how about this.
Ever see Iron Man 3? That movie was God-Awful for the majority of Iron Man fans, because it completely killed one of Iron Man's arch-nemesis, the Mandarin, and made him into a joke. But tons of other people still loved it, regardless of the fact that the main villian was a joke, because they didn't care regardless. And you know what? Those same people wouldn't care if the main bad guy turned was the normal Mandarin and not some cheap joke for a quick laugh in the movie.
It's that same with Smash, the majority of people who are going to buy this game are not going to give a **** whos in the roster, so why not just please the people who are going to care by putting in characters they want?