Ten years later we are still waiting. I'm referring to the vaporous sequel to the Nintendo 64 classic Super Mario 64 that was on-again/off-again for the entire lifespan of the N64 and then some. Super Mario Sunshine was a sequel to that game, yes, but even Shigeru Miyamoto admitted at the time that it's more of an evolution on the previous game and not a proper amazing sequel that follows the original formula. Super Mario Galaxy tempts us to consider it a sequel to one of the best games of all time, but its Wiiness changes up the formula. The closest we've come to a proper sequel is 2004's Nintendo DS launch title Super Mario 64 DS which included new levels, new objectives, and three new playable characters.
Beyond that little extension we're still waiting. Now rumor has it that Nintendo's Takashi Tezuka would like to see a new proper 3D Super Mario adventure for the Nintendo DS. He's not the only one, that's for sure. While merely wanting to create a new adventure is far away from an actual announced product, consider my vote cast for such a project. To be honest, I'd be happy with the same game engine from Super Mario 64 DS loaded up with all new levels instead of just an extension of the original game. Serve up a dozen or so new worlds with new stars to gather and I'll be a happy plumber.