I was getting really bored with my fort. I wanted to do a basic megaproject, but everything was just going so slowly. My dwarves were disorganized, the fortress was a mess, and everything just felt cluttered and sluggish. Had I done some things right from the beginning, I doubt I would have gotten this feeling. At least not until a few more years. Plus, there were a lot of creatures I wanted to try modding in and that would require a new world gen.
So I decided to collapse it into the ocean.

Now I need to decide where I want my new fort. I could just build over the ocean again, but I'm tempted to try something in the caverns.