Uh, for a mature title, why not Resident Evil 5?  Isn't that an obvious choice?  I just hope Capcom doesn't hop on the PS3 train with it.  Also, Nintendo needs something like Goldeneye or Perfect Dark.  A great FPS that has a good story and good controls and extremely awesome multiplayer that puts Halo and Perfect Dark Zero to shame.  It would just be for diversity, not so much to have a "mature" title.  I can't think of anything else I would want from them, I don't necessarily need a new Zelda at launch, just within a year and with alot of hype.  Also an online F-Zero would be nice, and even a racer like Grand Turismo.  Anyways, I think I'll be happy with the Revolution, as long as I have my Smash Bros. and Zelda.