Maybe a odd idea but my community would love this function.
A page that will generate a token for a certain server group. Basicly when someone registers on your website you could give them a link in the welcome mail our account page that will generate a token on the teamspeak to have someone become a different server group.
Hmm, sorry to say that, but I don't like this idea. That is nothing bot related and I don't see the reason why the bot web interface should give someone a special group on the TS3 server.