I could definitely get behind this. In the last few months, every time I'd mention some old demo I'd played back, people in the global channels would tell me, "Throw that bad boy up on YouTube." Well, my current machine is crap, so it'd hardly be suited to rendering the demos into a shape anyone would want to see. But demo recordings themselves are nature's perfect food--compact, ripe for editing, and now with added camera freedom.
A place where people could not only post their cool stuff but also request things's they'd like to see ("Hey, anyone got a demo of Manti's wedding?"), ask for info on maps, models, MOVs, or even share tips on how to do different things would be great.