I just expect Nintendo to announce a couple of new titles for this year's holidays that are equally innovative and inclusive as Brain Training, Animal Crossing, Nintendogs were in 2005 on the DS. Plus the Wii versions of these DS titles, for good measure, but that won't cut it. And they surely wouldn't be able to outsell the Gamecube with just another Mario and another Metroid Prime and another Smash Brothers. They have to have new IP, otherwise the Wiimote would be pointless.
Hardcore gaming is a bubble economy blown up by Microsoft's $7 $6 billion losses.