I've had more time to map and have basically finished the steam tunnels section of ns_shiva. I've gotten a few more areas sketched out, and some of the geometry done fo the more human inhabited sections of the map. However, I've been having a lot of trouble coming up with a lighting scheme. I need something more hospitable, brighter, and that transitions effectively into the lighting in those shots. I've been getting a bit frustrated with it, and its holding back the progress of the map.
Here is a very wip shot of the maintenance bay. I've compiled it, but the lighting is so bad that I wouldn't want any hint of it to influence your ideas.
I don't have much intuition as far as the numbers are concerned, so the more specific your suggestions are, the more it will help. Pick textlight textures, lighting values, light spot patterns whatever. Anything you can come up with will help, even just describing it vividly.