MightyMegfantomLike a badge for playing 100 lobbies, 500 lobbies, etc. and a badge for playing scout for a number of lobbies, demoman for a number of lobbies. This would give others an idea of what your main class is and a rough estimate of your experience with competitive games, etc.
Pretty cool idea
would love to be able to unlock some badges like play 50 lobbies as demoman or 100 as scout, or get an average k/d of over 2.5 etc :)
badges sound like a really dumb idea because they would encourage people playing the same class over and over all the time and getting rewarded for it