As we upgrade our bases, we are given new defences and new walls; bases grew bigger in size a couple of updates ago and a lot of new walls were introduced at TH10 and TH11. It has become too often to run out of time while my army is still marching the ever expanding bases. If TH10s and TH11s are to destroy more buildings and march bigger bases, they do deserve more time to do that. Therefore, battle time should be readjusted again to 3:30 minimum.
