I think people need to realise that a big company like microsoft wouldn't have something like this in such a bad economic time if it wasn't practical. The thing with this is that, some people may complain about there not being any buttons at all, but Microsoft could just as easily make a device for hardcore games like FPS's (like the PS3's Remote + Camera solution) that works in tandem with Natal. People say that it becomes really hard to do this once the camera is out on its own but look at things like the Wii Wheel, Guitar Hero/Rock Band Instruments and Wii MotionPlus. This way they can have their casual camera only games (along with some suitable games, maybe racing and simple RTS's like halo wars and Endwar (imagine circling your finger to make a selection of units and then speaking an action).
Actually, I just noticed how Natal would really work well with Endwar, to an extent Halo Wars and Joy Rider. Wow, I really want to play Natal Halo Wars now, lol.
EDIT: To the post above, I agree. Microsoft should be smart enough to use their patching system to update games (or atleast important ones) with extra controls for Natal, think about how Sony did it with Trophies to an extent and the Lair control update (haha, I'm using Lair as an example for something positive :S).
Consoles Owned: XBOX 360, Wii, DS and PSP.
