1. I've always joked with 'WiiHD'. Actually that may be it. Looking at the DS names and versions as an example. This way it carries the great Wii label as well as demonstrates the major enhanced feature of being HD.
2. 2012
3. This is the hard one. Nintendo has always changed their controllers. However, with the Wiimote its hard to really change it much. I would expect at most a perfect 1:1 motion contoller with maybe built in battery, better speaker, and maybe mic built in as well, idk.
4. Hard to say. Coming of Wii's success and probably some really good games lined up I would mostly swing for a yes, it would dominate. However, anything can happen and I would never count Sony and MS out of nextgen until I see their platforms.
EDIT: One more thing. It will be backwards compatible with Wii only, not gamecube. However, gamecube will be added to the VC service.
