3D World is pretty damn good after the first 1/3 of the game, it basically is Mario Galaxy 2.5 from that point on, there's even friggin space themed levels.
That said, will the Wii U be getting another 3D Mario?
Nope.
That will be for the next handheld/Fusion, and it has to be. Nintendo has to bring their A-game for that launch, if the next launch goes badly for them (like the 3DS and Wii U did) ... it's going to get ugly for Nintendo.
Their stock price will go under $10 in that scenario, leaving them open to hostile take over bids, and Iwata will likely get himself fired.
The next launch *must* go very, very well for Nintendo or there will be hell to pay.
IMO Nintendo already has the next 3D Mario and Animal Crossing earmarked for the Fusion/HDS (whatever you want to call it) launch window. And they really don't have much of a choice in that matter either.
