These 6v6 battles end so quickly that nobody can grind through the trees even with the 5x boost to RP and SL. The Dev server is supposed to be for us players to help bug test and with all the bots crashing before anybody can kill them makes it impossible to grind for the new vehicles.
Just bring back the 16v16 with mostly bots and make the bots not crash all the time and everything will be fine.