The problem with the Wii U is that its pretty much garbage. The situtation wont have been helped either by recent announcements of upcoming consoles due for release in the next 6 months or so. The Wii U never really had any identity or knew what its audience was. It was a console that apart from a gimmicky touchscreen, offers nothing really that the Xbox or PS3 didnt offer, and at a much cheaper price point.
I've owned every Nintendo product from the NES days (but not the WII U), but I see them at some point, going down the road of Sega. Take your games mulitplatform and make your millions that way. Let the other companies battle it out for hardware as Nintendo seem reluctant (financially I expect) to keep up on specs.
Because let's be honest here, if Nintendo out of the box gave it more power under the hood, and we saw games from day 1 that you just couldn't get near to on xbox and PS3, they would of had a much better start, even if it meant say 20% on top of the first RRP and devs wouldn't have been dropping titles left right and centre.