Being on the opposite end of a team stack is probably the worst thing. And I don't mean GAF server "oh, scramble did a terrible job" stack. I was on a Valve server and like everyone on the opposite team was someone who actually knew how to play and they all obviously knew each other. Meanwhile, everyone on my team barely knew how to switch weapons or move and shoot at the same time. Of course, when the game auto-scrambles, all of the team-stackers join spectator until there's a spot on the team they want to join.