Spawn camping with tank

The new contaminated map on conquest is really bad because of it. If you spawn on the mountain, a tank can see A and D flags easily, most of B and the entrance to C from their own base, basically locking down half the map spamming tows from their base and can't be attacked. Creates really imbalanced matches. Just played a match where 2 tanks sat in the spawn spamming tows. 

The other spawn point is at a disadvantage because it spawns in a valley. 

Same issue on blackfields and to an extent firestorm/liberation peak due to the elevation spawn point locations. Basically don't put giant mountains in or just outside spawn points. That or force other in-game spawn restrictions if you won't fix it through map design. 

Edit: Also a problem with helis spawn camping opposing aircraft, making sure they can't ever take off.