I dont consider myself a perfectionist, but when I terraform a wall i'd like it to all be the same height. I find the leveling terraform option a pain to use as it never seems to do what I want it to. eg when I'm leveling an area and the neighbouring areas are 0.10 in height difference it seems random which height it chooses for the area I'm trying to level. Would it be possible to add a slider or something to the raise and lower terraforming actions to set how much to raise and lower (in 0.10 increments, with a max of 0.50) to make it easier to get the terrain the same height. You could even make your terraform skill level effect the max you can raise/lower the terrain by.
Another idea could be that when you level an area it copies the height of the neighbouring area in the direction you are facing (if it's within a certain height limit (eg 0.50) of the leveled area.