I think most people will come into this thread and NOT read what was written all the way through ;) It's not like I wrote a lot there folks and I never said that this WOULD be what Nintendo does. Just something they could do to support HD. They COULD also set it up so that if it detects the box it just up rez's the 480i from the Wii to 720p or 1080p and sends a video signal back to be displayed on your TV. Or they COULD offer a video detection switcher that connects to the current video out on the Wii and the external processing box at the same time. The external box could signal whether it's being used and when to switch to it.
At no point did I say this would happen or that it's needed.
Prepare for termination! It is the only logical thing to do, for I am only loyal to Megatron.