Are you stoned? 
Waddaya talkin' about?!? That doesn't sound like it KINDA might work? Just throwin' crap at the wall, seeing what sticks!

I can get all kinds of networking stuff free, but wireless can be had cheap at computer shows around me if you know what you're looking at.....if you are doing a "couple players" setup, you'd really only need an 8-way and 3(?) buttons to play most games.....mebbe go to a micro atx board to save a bit of money....just throw a small 250 watt power suppy in there with a cord coming out the side, plug it in behind a couch....WHAT?
NOW you guys got me wanting to try it just to show you I can do it

then I'd tell you I did it, post one pic (non-helpful, of course lol), and sell my creative content to the highest bidder (Bill Gates, are you listening? I hate you, but I'd take your money...'s only fair, after you took so much of mine!)
Stoned? Nah, I was just thinking WAY WAY outside the box. At least that's what the voices told me to tell you.
Other than outrageous cost, is there a flaw in the idea I proffered? If so, someone say what it is so it can be fine-tuned and perfected.