Maybe we should get together and write up a proposal and a standards document? We need something that requires minimal financial outlay, but that can be made up for with a lot of technical skill/knowledge. (Like, with the Wiimote hacking, there would be some soldering, dremeling, and hot glue gun action involved.) A fairly hefty bandwidth requirement seems reasonable, though we would only want to take a minority of what is available. (Caroline Collective has 16mbps down and 8 up.)
Future-proofing the standard will take some thought. We would like the standard to grow as technology becomes available, but still be inclusive of older installations.