terrain might be an interesting thing to add in game they would provide bonuses like plus 1 on your defense roll if that territotry was attacked
A list of terrains I thought of....
wall +1 to defense roll
hill +1 to attack roll
bunker +1 to defense and attack
mountain +2 to defense
blacksmith ( or forge) +2 to attack
cloning center ( or farm) +1 reinforcements
but you wouldnt be able to start on terrain and you could turn terrian on and off like choosing your game mode ( Att, Hardcore, 1v1q)