I don't see this as so much a emulation of the Wii in an attempt to gain the Wii market as the next step in console gaming that Nintendo was the quickest to grasp. Motion detection and Natal type tech will revolutionize the way people play games. Sure, initial releases will be a little gimicky, but imagine next gen consoles running on 3D TV and with Natal type motion tech. The immersion into the game will be incredible (and probably end civilization as we know it).