Testing this right now. zeke is right, the flat trajectory makes things useless, if anything, higher skill should give it more of an arc.
Will update this post with some paint drawings in a minute.
Catapults need to be a tile to tile calculation, because you can balance the catapult on the edge of a tile easily. so make it go like this:
Where it hits all 4 borders, not just the one or two like it used to.
edit 2: you cant repair the walls on test.
edit 3: the text says im hitting, but it doesnt do any damage now.