Thought to share this here aswell (I already created a topic on TLO about this but its always nice to get some more feedback).
I'm currently working on re-vamping an old map and started with the hallways. I'd like some input from you guys, especially concerning textures and lighting. The hallway design itself is quite finished and I'm quite happy with it, mainly also because of how it works from a mapping standpoint (The map I'm revamping didn't have an airtight design which caused severe performance issues on older pc's under certain conditions).
Here's a screenshot of the hallway:

Regards,
Martin