I think I have a couple of good reasons why Destiny wouldn't work on the Wii U. 1: The motion controls would make Destiny a bit janky, especially when driving vehicles and your ship. 2: The Wii U's low online capabilities would massively hinder Destiny's mmo-style servers. I could be wrong about 2, but if it's like the Wii, the servers wouldn't work at all. They'd be too small to work the way Bungie is intending.