If the Wii was HD, it would have been too expensive for smaller 3rd parties to develop interesting experimental games on any console at all, and they'd have to stick to the DS and the PC. We wouldn't have games like No More Heroes, Muramasa: The Demon Blade, MadWorld, or the Conduit.
The Wii would have had a smaller userbase due to the higher price, and even less 3rd party support, and a much less interesting library without the games I just mentioned.
A Wii HD in 2006 would have sucked and failed and possibly even killed Nintendo. A Wii HD in 2009 or 2010 would be even worse. There will never be a Wii HD.












