each class, from each team selects 1 weapon from each load out slot; then all weapons picked cannot be used by either team. As for the order of selection red scout - blu scout, blu soldier - red soldier . . and so on
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All stock weapons cannot be ban.
There are no permanently ban weapons
No hat bonus sets
Each team can undo any one [more?] pick of their opposing team, at the end of the pick-ban selection ]
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This system would allow for Valve to see which weapons are ban more frequently, and possibly see which weapons give an unfair advantage when used; as well as potentially allowing them information on adding weapon to the white-list of always allowed weapons, and the possible formation of a black list of perma-ban weapons
Not to mention this method has VERY competitive aspects to it.
-You can pick weapons you do not want to fight against
-You can pick weapons your opponent is better with
-You can ban items in such a way to enforce a strategy or method of game-play
-You can play mind-games by banning certain things
-You can add more variety to the game by being able to un-ban one weapon
This allows Valve to see every weapon being used, the the amount to which it is being used, while still creating a pug system which would bolster the competitive scene. i posted more on this on Sal's how to get in to comp lobbies thread - read more there if you have nothing else to do [ http://teamfortress.tv/forum/thread/8952-how-to-get-to-in-game-comp-lobbies/16 ]