Derelict. The entire thing.
This would be a great map for all species - lots of dark areas for the Aliens the hide in, lots of open terrain to shoot over and lots of perches for Predators. I imagine it as having two main 'levels' - the general area and the egg-filled cargo hold. The centre-piece for the general area would be the Pilot room.
Gateway Station. Although I suppose that would just be your general hallway-based map with a shinier skin.
Auriga. I know this was in AvP2, but that map lacked any sort of landmarks apart from the Betty. Give the map a test-subject room with Ripleys 1 through to 7, a 'birthing chamber' which wrecked human hosts, an underwater section and a hive section. Perhaps at the very bottom there could be the room Ripley 8 was held in, which would make an amazing arena room.