Took me longer then I was hoping, but I have finally gotten this facility designer PCG tool to a good place.
The last PCG tool I released was more for organic level design, likes caves and tunnels, but this is all about rigid man-made structures.
This one works for just about any game or camera type, like the FPS and top-down examples here:
It’s up on Fab: PCG Facility Designer | Fab
The full demo is here too: