My idea is that after chopping a tree everything in its path is destroyed or heavily damaged. If there is a wall of trees they should also fall down or take a large hit in % to finish off cutting them down. Walls should be crushed from fallen trees. Buildings should be destroyed or take a large damage %.
Boulders should be able to be destroyed. Having a pickaxe or introducing a sledge hammer to make the process faster would be nice.
I don't consider cliffs as being broken/unintended since its part of the map generator. Moving dirt to get to the walls is annoying but overall its not a problem when you know how to climb cliffs instantly without using phlegm
![Trollface ¦]](./images/smilies/troll.gif)