Currently (~1:20 CET) 'ready' (non-spec) players get moved to one of the 'TEAMS All welcome' room no matter what. That sux. I can join another battle and instantly get moved back to the shitload-of-people-room where i don't want to be at the moment. Why? I didn't opt-in to something like that. Did something changed in the matchmaking stuff?
A lobby server acting this way is REALLY annoying, especially if you just had some nice small team games with decent people running and then get moved into the troll pit.