Title says it all. Sometimes you find that perfect squad, some good communication, some objective based squad play, or maybe you just want to hang out with the other recons. Either way, it's always sad to lose a good squad at the end of the game, and since you've only talked to these people for 10 minutes, getting them together in the next game is awkward at best.
This would lead to more enjoyment of the game for many people who are not in a clan.
Balancing between games can be handled by moving squads around instead of individual players.