Part of game is making pacts and betrayal, but it shouldn't be a part of a game that people team up out of game. MOST of "Everyone vs Everyone" matches ... i guess 15 out of 20 I played last day I meet group of 3-5 players sharing same tag and doing coordinated attacks to eliminate everyone else. This make game playable only in team vs team mode. We should have possibility to in-game report such players and ban them out of game.
P.S.
Interesting is that in team vs team I meet such groups maybe once per 3 games. That make me think "find a clan" caused "we can't win so we team up to ruin other's game, if it is not fun for us then noone can have a fun".