I put so much effort in how it looks thus far and i sort of wish to see it completely built, unfortunately im procrastinating on it.
there are 2 more spots for above ground buildings and a bunch of room underground as well as inside the towers.
at the 4 entrances what i wanted to do is make a pit into a long corridor with the new rapid siege balista leading to the central tower which will have an arena for who ever survives, the civilization isnt doing that well so help the dwarves survive and prosper.

you can never dig too deep, or too greedily!