There needs to be a buffer period before people can buy tanks and artillery vehicles.

As it stands, if one team doesn't have tanks unlocked, or the resources to buy them, this can lead to situations where one team is bringing multiple tanks to the closest area at the edge of the zone where the other teams spawn, and effectively make it impossible for the team to establish any type of foothold.

Just got out of a game where there were 6 tanks on the map before even a single FOB was able to be established, and the tanks were just absolutely demolishing any attempt to set up anywhere on the map.

Even with the entire team trying to coordinate with RPG's, we just couldn't get enough shots on it before the infantry took out the RPG's, the other tanks blew up the position, and mechanics were repairing the tank. It was a nightmare and basically everyone just gave up.