Soundmanred
Lifer
To answer OP's question...no...could not be done...
I mean, taking your part list...the VIA CPU/GPU are NOT more powerful...not by a long shot, especially the GPU...the Unichrome S3 is by far one of the if not THE worst IGP out there...even getting bested by the GMA950 and GMA500 in ALL tests...Google it if you dont believe me...and the Wii's GPU is vastly superior to the GMA line of IGP's.
Add on top of that program compatibility such as OS and games that are playable...I know my GMA950 IGP in my netbook has a hard enough time playing PS1 games on emulator at the games native resolution and no eye candy (like AA or texture filtering)...games on the level of the Wii/Xbox 1 are IMPOSSIBLE with a low end IGP like the Via S3 or Intel GMA...
I mean, over all, I get what you are saying OP...but to answer your question, right now as technology is...Id have to say no...I mean, even the ION platform from Intel I dont think is as powerful as the Wii...
Granted the Wii does kinda suck compared to true next-gen consoles, its not exactly a slouch either ya know?
How dare you disagree! Blah blah blah, dementia, i'm poor, roommate, blah blah blah...