I have to agree with vagrant, OP's post screams PS3/Xbox360 fanboy.
Let me condense the OP's post into two sentences:
Waaah, the Wii costs too much; it's just a better GameCube, it should be cheaper!
The Wii has crappy graphics; it doesn't have 1080p resolution and 16x AA + 16x AF + HDR, why doesn't Nintendo make it more high-def!!
These arguements are futile, the Wii has tons of advantages over the Gamecube. First off, let's just say, for theory sake, that its just a slightly better GameCube processing wise. Let's list off what's added to Wii that's not in GCN:
WiFi, completely free.
512MB of memory so you don't need to shell out $$ for mem cards
Virtual Console, Web Browser, and all the other online capable things that GCN never had.
SD card reader for even more space if needed
Free game packed right in
That list doesn't even touch on the controller scheme and it's brilliance.
I suggest the OP step back and take a reality check on how stupid it would be to implement a Wii-mote addon to the GCN. This line of thinking has been crossed before, but it's still stupid as ever. A Wii-mote addon wouldn't be able to provide full sized DVDs for more space for content, it wouldn't be able to provide all the online features, and beyond that, it wouldn't be able to provide the extra processing power needed to run the games how they look now.