There should be a tick box in the settings (default off when first on center of course) that causes a noise like a simple ding is heard whenever a lobby of your preferences (like location, game type- the options to filter lobbies like this are already there) opens up, so you dont have to sit staring at the lobby page waiting for one to come up in order to get a space as the class you want. this would be very helpful for users as they could just leave Center open and when they hear the ding, join the lobby they've been waiting for. especially helpful for users who want to play spy or sniper, because they get taken up so quickly and your only chance to get a spot as one is by staring at the page. it would also cause lobbies to be filled faster.
looking forward to feedback.