I believe that Google chrome also only launches Mumble automatically if it is a mumble Lobby (correct me if I am wrong.)
Games are also not the only thing that people will be doing while waiting. I personally am often watching TV or a Movie (or even browsing the webs or cleaning my apartment) on my computer while waiting, and when 5 people don't ready up I end up full screening whatever I am watching and try to check back on the lobby occasionally to see if anyone filled the spots that the trolls didn't ready up for, but sometimes that is easy to forget and as such I unintentionally become one of those trolls who doesn't even show up to the lobby. I honestly could care less about this hurting my reliability, however adding a sound for the lobby starting could cut down on the number of people who don't ever join the game when the lobby starts and that is a problem that though I have been having happen less lately is still a pain in the ass when you just waited for a lobby to fill and now you are in game and still have to wait for the lobby to fill again.
Edited by The Once and Future King, 04 August 2014 - 08:24 PM.