Everyone stop playing around. There is only one answer. Pokemon MMO on the Wii U or at least an open world Pokemon game with LOTS on online capabilities.

a Pokémon MMO, let's call it "Pokemon Land" or "Pokemon Online".
It's basically pokemon with Wii-U graphics, and massively multiplayer. Yes it's a mammoth of a project but it's something that if done well it's surely going to make Wii-U sell a shitload.

Nominating this thread as the official thread for voting for a new entry in the Wave Race series which hasn't seen any action since the GameCube. Star this or the original post to vote.

Or, for a franchise that actually makes money, Pokemon Snap.