"Wouldn't it be great if the Wii had a hard drive and HD Support?" That's how it all starts ...
If Nintendo met these requirements people would be saying "Wouldn't it be great if the Wii was as powerful as the XBox 360 and PS3?" which, if satisfied, would lead to "Wouldn't it be great if the Wii had an online service which was as good as XBox Live?" and then finally "Wouldn't it be great if the Wii could play HD movies?" ... When Nintendo met all of those "needs" people would be annoyed at them for producing a $600 console that has no games because they're simply too expensive to develop for a console with a "Gimicky" controller.
As anyone who has ever played a MMORPG can tell you, when a company starts focusing on the infinite needs of the "Hard-Core" audience they lose sight of what is important to the majority and thus destroy what they're producing. The Wii is far from perfect, but it suits the needs of the majority of gamers so it is in a very good position.
