To be perfectly honest, it was the fact that they severely under-powered the console. Now I wasn't expecting ps3 like graphics, but, I knew it was going suffer as soon as people were to notice the 480p res was going to be really stretched. Mind you they manged to make SMG/SSBB/MP3 look really good with its hardware, but a better bump in power would've really made them shine.
No to mention Mario Kart Wii (specifically) suffered the greatest since in my eyes it didn't look that good, even in 480p. Which was why it was given a boost in its bloom lighting; which btw was kinda distracting. Had they given it at least a slight bump in graphics as well as HD, it could've possibly gotten a little better support and games like Super Mario Galaxy could/would have look even more beautiful to justify a purchase (more sales).
