Why don't they just make it so when you start a lobby you can select the number of each class you'd like to allow in your game and have it defaulted to 1 playe ron each class so highlander is easy to start and 6v6 would take nothing more than selecting 2 on scout and soldier, 1 on demo and medic, and 0 on everything else? Would easily allow for 6v6 without directly supporting it...
Also if its all the same to everyone else it'd be nice if format-bashing was left out of the thread.