Wired Interview with Miyamoto
Wired: Is the traditional joystick dead?
Miyamoto: Well, as the individual who created the traditional controller, I certainly don’t want to speak badly of it! What we’re trying to do now is develop interfaces that are more welcoming to a broader audience. But we took a very big gamble in developing the Wii remote.
The interview is fairly brief, but it does give some insight on just how much Nintendo deviated from the ‘normal’ flow of developing new video games and systems.