I think the biggest problem with Natal will be the lack of software. When the Wii came out, developers were forced to work with the technology and adapt to it, they were put in a sink or swim type situation. With Natal, this is going to be very different. Developers will look at the sales of Halo 3, a game with a traditional control method that sold nearly 10 million copies. They already know how to design for a traditional controller, and no one is forcing them to do otherwise. If you develop for the Wii, you develop for the Wii Remote and Nunchuk. For those developing for the 360, they will have the option of making games with Natal or with the original controller. I just don't see the biggest, most successful developers being swayed into using this new method if they don't have to. It's too big a risk, when they know the success they can have if they do otherwise, which will lead to a lack of killer Natal software.
My Games of 2011:
The Legend of Zelda: Skyward Sword
Elder Scrolls V: Skyrim
Super Mario 3D Land
Uncharted 3: Drake's Deception
