I was thinking about launch titles for Nintendo Revolution and I think a new Super Mario is unlikely, because it sounds like Miyamoto still doesn't have a solid direction for the title. What if Donkey Kong stepped up instead? Tokyo EAD who worked on Donkey Kong Jungle Beat could be working on a DK launch game right now. If they were, there's no doubt it would be a fantastic game, but i'm thinking about the selling power as a launch mascot.
Donkey Kong is a lot more... "mature" than Mario, yet he still has the same mainstream appeal. He hasn't really been in the mainstream limelight at all recently since Donkey Kong Country, Jungle Beat and Konga were ignored because they were on GameCube and had fancy accessories holding them back, DK64 was pretty popular, but not enough. Thus it would be seen as a nice "comeback" of a classic gaming icon.
I think if they could make a Donkey Kong game for launch, which is accessable, and achieves the excellent "simple controls / complex gameplay" that Jungle Beat accomplished, it would be absolutely huge and the perfect thing to kick off the Revolutions image.
(Mario would also still be there, in Super Smash Bros 3.)
Also, gameplay possibilities! Tokyo EAD did an amazing job with just two buttons on the bongos, imagine what they could pull off with the Revolutoin controller? I just thought about it and my head exploded, this could be the greatest game ever.