Satoru Iwata has said that the company has now used all the ideas in the proposal pipeline for Wii with the development of Wii Music.
"Wii Music completes what Miyamoto wrote in his proposal when he came up with the idea for the Wii," he told the Wall Street Journal. "He was saying that he needs to think up more ideas now."
The steady amount of new peripherals is set to dry up too. "Most of the ideas for accessories that we had initially come up with are out now.
"We might think up some more, and we might make them if we do, but we don't have any plans to release a whole lot more."
That is of course, only if Miyamoto's next big idea doesn't require one. We're also holding out for a proper Wii Remote joystick for whenever Star Fox rears its welcome head.