I never understood why people want games to be exclusive. It seems borderline sadistic. Why don't you want others to get to play your game? I guess development time might be shorter, or maybe the gamepad use will be better implemented...
Onimusha and if it were a Wii U exclusive = terribly low sales with no future.
So first party titles like Zelda, Mario Kart, SSB, Metroid etc. shouldn't be exclusives? Nothing wrong with wanting another good Wii U exclusive title to help it sell more. It's not like it has a long list the way it is. It's not stopping anyone from playing it. Want to play it? Buy a Wii U or find a friend with one.
That's different. It's your traditional Nintendo games to expect from it but old franchises that are to be revived should not be an exclusive to the Wii U, unless they were produced by Nintendo.
Plus, if people at this point haven't bought a Wii U then most likely they don't give two shits about it.