Would be great, terraforming is a pain in the ass without this feature. Maybe at 100 terraforming introduce a "master observer" perk where you can lay out a certain zone the way you want it to be. When you have done this every tile in this area could get a small flag on it with colours corresponding to the action needed:
No flag = done
Red flag = Raise
Yellow flag = Lower
This way you can really plan out your village.