Make some main bridges to the warp gates. Then make these bridges destructible, so that the advancing faction can blow the bridge and cut off the roads. This will allow for some major fights at the funnel points of the bridges and also allow for new vehicle types such as the bridge layer. It will also put an emphasis on defending the bridges. Also some points for successfully defending the bridges. Just an idea.
So when a faction gets every point on a map the only thing they need to do is destroy those bridges so people can't go anywhere ? Ok....
