On first glance, this seems a much better plan than the WiiU.
First, the name. I sincerely believe they really hurt themselves with WiiU, as many people didn't realize it was a completely separate system. given the broadened base of non traditional gamers, this hurt sales.
Second, the different form factors? I can dig that. As someone who uses a tablet frequently, this is nice. The ability to seamlessly go from TV to tablet, to portable small screen with multiplayer is a much better gimmick.
Once again Nintendo goes their own way, and I think I like this way.