Large swamp treehouse

At some point, I decided to upgrade my first swamp outpost, which was just a portal and some chests, surrounded by a wall.
I had originally intended to do a simple treehouse, with a space for the smelting equipment, and a bedroom.
This... is not that.
When I go into thing without a clear plan, they tend to just keep getting bigger.
Also, Draugrs are assholes that can shoot straight up. They managed to punch a hole through all five tiers before I noticed. the ground underneath is a mess, now, because I had to raise earthen walls everywhere, and put down a million work benches to protect my build.