As for who gets in the beta and who doesn't: Right now I'm keeping it quite small because I'm hosting it from my house and I wouldn't be able to download research if the server was full all the time. I'd use my awesome server, but right now its busy hosting this website and AoT.
Also there are no trust lists, user authentication, or other jerk management systems in place yet. So I've gotta keep it limited to people that I know won't fight with eachother for the time being.