Yea, I wouldn't expect the WiiU to even come close to approaching the sales of the Wii. It doesn't have the same interest level from non-gamers that the Wii had, and gamers will quickly grow tired of owning a completely outdated system (technically all consoles are outdated, but whatever). The success of this console hinges entirely on 2rd party support, which will likely dry up when the next Xbox and PS4 are released down the road. No one wants to make a downgraded version of their game, it's too much work.
I haven't seen much interest in the touchscreen gimmick from core gamers either compared to the motion controls of the Wii.
Who knows, maybe if this console flops (which I suspect it will) then Nintendo will realize they can't thrive on gimmicks forever. Then their next console will get rid of the gimmicks and just be solid, like the Xbox or Playstation. Gimmicks are neat occasionally but they alienate a large portion of your potential install base.
I haven't seen much interest in the touchscreen gimmick from core gamers either compared to the motion controls of the Wii.
Who knows, maybe if this console flops (which I suspect it will) then Nintendo will realize they can't thrive on gimmicks forever. Then their next console will get rid of the gimmicks and just be solid, like the Xbox or Playstation. Gimmicks are neat occasionally but they alienate a large portion of your potential install base.