Enderman is the most effective class against humans as it can deal damage non-stop. But they just nerfed the teleport cooldown from 5 seconds to 15 seconds. And teleport is cancelled if you die. Enderman teleport much less frequently now and I'd say that's balanced pretty well. The point of enderman is to find campers and that counter shouldn't be removed. As for overall balance, MCI is a team vs team game in which both teams are extremely different and unique. That in itself means that overall balance is utterly impossible. I'm glad that the devs attempt to balance such a game unlike VampireZ.