1. My understanding is that they are. Can't confirm for certain at this point, but don't see why they wouldn't be.
2. I am not one to judge graphics on the Wii as that is the major reason I have not purchased one. The graphics to me seemed to be good enough, but if the Wii had HD resolution capability, that is likely the version I would buy no questions asked.
3. Agreed. Now if MS and Sony could copy the Wiimote.......