I'll wait until the finished version to comment on textures and lights, since you said you were going to wait on those.

The layout I find to be very confusing. After a few minutes of running around, I still don't have a good sense of how to move from one base to the other. Maybe it'll need to grow on me. But for now I would suggest trying to simplify the layout.

Also, in the flag room, I could only find one way to get from the bottom level up to the top, and the teleporter on the bottom goes to a completely different room.

Otherwise, I liked the scale of it, how it's big yet still provides cover (good rifling spots :), multiple levels, and overall a good size for big games. I'll give you the same advice SATAN gave me about an earlier map: trim out unnecessary areas and try to make it more streamlined/focused to do what you want it to.