Well, yeah of course everyone would want to be Mario, but what would make the game great is bringing out the underdog Mario characters (wooster, bowyer, punchinello, booster, mack, koopa the quick... that one really big bob-omb with the crown in Mario 64). the possibilities go on and on and increase with every Mario game that is released. (thank god for the mariopedia. that will be needed).
And the game would be designed so that some of those characters would be more powerful than Mario, not necessarily in strength but they would have other strengths that would make them a formidable opponent for Mario or even Bowser. Like, for example: Bowyer would have an ability where he could shut down opponents abilities for that turn, or maybe even several turns. He would be somewhat weak in other aspects, but using that ability every turn could shut down his opponent's Magikoopas or his Mushroom Archers. The only downside with Bowyer would be that he has to sacrifice arrows (these would be like his goombas. His 1st level units) every time he uses the ability.
What I'm getting at here is that sure, Mario would be a hot pick among players, but for those who want to do something new, there will be plenty of other powerful characters available.
And don't get me wrong, Pokemon has greatness on some levels. I used to play it actually, and I have a 1st edition charizard hidden away in my card collection. I mainly dislike that there is so much coin-flipping involved.
Ok, I'll get those pictures sent to you eventually. I have to go hepl my dad wth something right now, but I have them scanned in and everything. Gotta go.
-Gryphon