that would terribly inbalence the game like when i look around for someone to kill and their all in adv melee. It makes me sad
if you want a one on one match, tell the person, "hey, lets have a one on one match." make your own server and tell them to join, tell them the password then enter sv_password and then the name of the password. If you want it to only be melee tell them, "Hey, lets only do melee." This idea would be a waste of time and would force people to do things they dont want to.