They've done that. They failed.
People may complain about squishies shooting things at them, but without those squishies the average melee has problems getting kills. They go to a server with melee only and find out that they actually suck as the pro-melee mow them down. So they get frustrated and decide that while squishy ranged may be annoying, at least they are within their ability to kill. Once the average melee player is gone, the pro-melee leave too because they can no longer maintain their pro k/d against other pro's and their playtime degenerates into complaining about the attack/block/chamber/feint paradigm.
This.
We've done it, it failed for reasons stated above. The average player doesn't want to play on melee only servers. There's no friendly ranged to stun the other guy. There's no horse to bump him. You can't play those classes. The "pros" don't want to play without the average players playing, and the server dies.
Think about it whenever you make a "remove ranged/cav" thread.
