Please, please let this be a lesson to Microsoft that gamers aren't interested in gimmicks, and that the casuals who do want gimmicks are far more fickle.
Oh wait, you meant something else, didn't you?
Get off my lawn, kid!
(I own a Wii and a bunch of games for it, it's much nicer to play with the family, although Dwarf Fortress with my son sometimes happens.)
Besides, how many Kinect games are in the top 50 for Xbox 360? Zero. And how many of your gamer friends play Kinect games? I'm betting it's close to zero.