Deleted member 465307
Why do you think the home console will have a screen at all?
In my opinion the handheld will probably have gamepad functionality and it will be a nice bonus for those who own both, but the home console won't have a screen on the controller.
This is what I'm guessing, too. Home variant will come with something Wii U Pro Controller-esque to match industry standards and expectations (with maybe minor changes like touch pads and scroll wheels), and the portable variant will be the GamePad accesory (if they even allow it). I think innovation and experimentation is most likely to come from the handheld (since it needs to differentiate itself from mobile and has no other competition) and the relationship between the portable and home variants. I could see the handheld being traditional, too, however.