Minecraft missed the boat on Wii U anyways.
It could have came out near launch with gamepad support and it could of been one of those rare 3rd party games on a Nintendo platform that is competitive with major Nintendo games in sales.(and despite the small install base of the Wii U sales of Nintendo games and the DI/Skylanders/Just Dances of the world are still strong on it so there was def a market for minecraft)
As it is wasted potential.