I hesitate to use the word "team", but if you're in a team of 15 players and the entire objective is to beat the other team, then why is "two coordinated carriers are OP" a valid reason to prevent them joining a division together? Surely this kind of teamwork should be encouraged. If ships are so helpless toward multiple squadrons of aircraft then there's clearly an issue. Perhaps the AA system needs to be revised, or maybe there should be an option for the player to control the AA guns.