Thank you! That is the exact atmosphere I was going for; a world of darkness with pockets of hope if you look for it. I'm also glad the diagram helps with the Sector setup.
As for the theme, I have commented that wasn't the priority for my entry; a zero for my Theme is very justified. I instead put effort into the Prospero Dream focus. That said, the scale was also commented on, which I didn't catch the Sink is actually a lot smaller. So, I've revised the size scale to still be big for a person to travel, but a lot more to scale for a colony station.