I may release a beta soon myself, so I'd like to earn some good karma here. :D
Overall I liked the map. Very sprawling, kinda hard to get a sense of the layout. I don't see any way to get to the penned off area on top of the building or the rooms just below that without a rocket jump. I don't much care for that myself, but that's a personal choice.
http://www.cursesandepithets.com/quake3/shortfuse/shot0000.jpg
Room with the lg. If you look to the right at the red beam of light there's some z-fighting, which of course never shows up well in a screenshot. That's the only instance I found, and that sort of thing tends to catch my eye.
http://www.cursesandepithets.com/quake3/shortfuse/shot0001.jpg
You have all this great rock formation throughout the map, and then you have this lame platform here. It wouldn't be so noticable if it didn't stand in such a contrast. Make the rest of your map suck more, make this area look more rocky, or better yet choose a metal texture.
http://www.cursesandepithets.com/quake3/shortfuse/shot0002.jpg
You have this dead-end in a cave with only two itty-bitty pickups to make it worth your while. More over they're kinda hard to get to. If I was playing I'd be pissed off I'd bothered to go this way. I always like crystals though. Great shader on your's.
http://www.cursesandepithets.com/quake3/shortfuse/shot0003.jpg
I like that a lot.
http://www.cursesandepithets.com/quake3/shortfuse/shot0005.jpg
http://www.cursesandepithets.com/quake3/shortfuse/shot0004.jpg
I was able to rocket jump into this crevice and had trouble getting out. It looked like there should be something of interest over there.
http://www.cursesandepithets.com/quake3/shortfuse/shot0006.jpg
Come on, that's just lazy.
I also thought the quad was overly hard to get to. My personal feeling is that the best players have enough of an advantage in a map without intentionally trying to tilt the map in their favour.
Great work over all.