A chap who previously worked on Darksiders 2 didn't respond well to Nintendo's approach with the GamePad and Wii U.
Despite working on the game when employed at Vigil, Xander Davis wasn't able to work on the Wii U version "luckily". Davis was keen to raise his concerns at the studio about porting the game to Nintendo's new system. Despite being a skeptic on the GamePad interface/concept, he did not that "you have to do it right" when approaching the Wii U to justify "all the hassle and a $400 Xbox 360 seven years late".
Davis went onto to slate various aspects of the system and controller - despite having not tried it yet.
What I'm hearing from people who have actually played a Wii U as recently as a month ago, the games pretty much suck and the tablet is pretty much a complete gimmick.
Kinect comes to mind. PlayStation Move comes to mind. Still tethered, not wireless. Maybe publishers can pull off something clever. But won't it just kind of be clever for a little bit, then not really worth your $60 dollars and just annoying afterwards? Motherf*cking Wii comes to mind.
But, sure, we'll have to wait and see. I can't comment on specifics. I can only speculate, but as a UI Designer applying experienced critical thinking to game mechanics UI and the Wii U tablet, none of it makes sense to me to truly add value to gamers, even if you try.