its very unlikely to make a decision like that right now for nintedo ... since the wii will be released in just a few months, and they would have to go back and program the wii and ds. I believe they are done making all the finishing touches on the wii, even though some of those touches havent been revealed. They plan to ship millions of wii consoles before release, and that takes some time. My friend who works at Best Buy said they had xbox 360's 3 months before the system was released, locked and sealed in the back. Nintendo doesnt have any more time to go back and change something as big as this, unless they already have.
cool idea though