Let me let you in on a little secret: I am currently writing the story to a game, but I only have 2 developers who I can present the idea to. One developer is underground and on a strict budget, another one is on a decent budget but might not take a chance on my game. IF one of them decides to take my idea, we would still need to find a publisher to fund the game. IF we find a publisher, the game would still need a lot of work before it's out. At any time the publisher could say "you know what? We don't think this game is gonna sell, we're gonna have to stop funding you" and the game becomes what could have been.
In my opinion my game destroys other attempts on the Wii, but what's the whole point if my game cannot be created??