That's what they currently do isn't it?
I wouldn't know I don't own a Wii U.
we weren't talking about those games, we were talking about the ones that use the touch screen only
I very often used the top screen in Pokemon Mystery Dungeon Explorers of Time (and Sky). I always kept the map and team stats up there so I could easily tell where all my team members were and how much HP they had left.
Maybe an option to choose what screens are display on the gamepad or the TV. You could choose to have both in both place. One in one place and one in another. or the same in both places.