We can't simply ''erase the team balancing system''. Let me explain to you why.
You're in a game of blockwars. Your team isn't doing very well and you guys captured 0 flags and the opposite team captured 3. Sometimes , players don't want to play anymore when the other team has the lead , so they leave the game , which makes it even harder to win a game because you're with fewer players in a team.
The balancer is a good way of making a game of blockwars fairer for both teams. Indeed , getting passed to another team when your team was almost winning is very frustrating but the game mode would be even worse if there was no auto-balancer.