Even though I think the Wii U sales suffer because of the GamePad, I still really like the controller. In fact, I hope Nintendo's next console has two skus where one of them has a GamePad controller that can be used for off-screen play. I would also pay for a better range reception too.
The Wii controller was more revolutionary but the GamePad is more versatile.
Edit: I just realized how similar the GameCube and GamePad's names are O_O







