I'd also like to add that while I really like the merging of the 2D and 3D elements of Mario, I really wish Nintendo would make one more world-based Mario game like 64 or Sunshine, where each level has multiple stars and each attempt changes up the level in it's own way. I liked exploring those huge environments and I kind of miss that. Then again, this game is basically just a whole game made up of those awesome challenge levels from Mario Sunshine so I really can't complain.
I don't know... seems okay but I've found more stuff to enjoy on the 3DS then the Wii U. What I do like is how small Nintendo's first party games are. The new Mario game is under 2 gigs and Windwaker is around that size too. Pretty refreshing compared to the 15 GB+ downloads I'm used to on Steam. Downloads also seem fast on Wii U, at least compared to the 3DS.