I agree with the gym class style. as nickname posted.
To add to it we need to group together people that feel that they dont know the game all to well. so assuming we are doing 4 team (but if we have 5 teams just change the numbers) so the 4 best four players should also have at least one of the not so great players. and then the normal gym class style picking.
Another way we could try: The Negotiation style
because for the most part we all know how we play, which classes we are best at, who we are best teamed up with, exc…. if we group together and piece the 4 or 5 teams together as a whole group. If someone feel’s there team is stacked on the good or on the suck, the appropriate trades can be made. Maybe it takes the best 2 players and 3 noobs, maybe it the best 4 players and the worst 4 players split up and the middle players distribute. When each team feels they have a fair team, or as fair as they are going to possibly get, then we are set.
Maybe it takes a combination of the two ideas.
What it comes down to is we dont wont one team going in knowing hands down they are going to get rolled. These events are here for fun, meeting new people, and having a good time.