Well, we've seen Super Mario Galaxy 2, so what's stopping Nintendo to release a second odyssey game? And, how would you like the game to go down? I think nintendo should pull a sonic forces with the villians in mind and have bowser teaming up with old villians like Wart from Super Mario Bros 2, Tatanga from Super Mario Land, Cackletta from Superstar Saga & even Wario from Mario land 2: Six gold coins. That also is an incentive to explore new lands like Sarasaland from Super Mario land on the gameboy, the Subcon land from Mario bros 2 and even the beanbean kingdom. Maybe even we can revisit the metro kingdom and Donkey Kong makes a suprise visit?