Well, the Thrust Ring is only about lunar gravity.
I forgot to mention that we do have a zero gravity facility. It’s at the center of our captured asteroid, Plymouth.
We’ve been mining it for a long time, and some of it has been hollowed out. It’s still a work in progress, but there’s always something to do.
Did you ever get the pressure dome fitted out for flying a’la “The Menace from Earth” (Heinlein)?