I have an idea: Let's speculate about stuff instead of not speculating about stuff:
Old timers (and true retro freaks) Name me a pre-NES franchise that had not seen an entry in the last decade that you think could benefit from any of the features which the Wii U sports. Or just name such a game that you'd like to see again, and how you think it will be evolved for current times.
For me? "U Combat", a sequel to the hit pack-in which helped put Atari on the map. Instead of just tanks and planes, other forms of vehicle are represented, including boats and bikes. In addition to the returning multiplayer modes, a new battle type pits the GamePad-holding player, who can (in Missile Command fashion, edit: albeit overhead) fire bombs, with a transit delay, at points in the screen in an attempt to take out all Combatants or defend a fort area or whatnot.
pre-edit: Ah, I see people are doing controller porn now. It's much better than the weird clashing that was going on. Nonetheless, my challenge above stands!