hi pix :P
I really think it needs a second floor, like I said before. I think you could run a bridge from the top teledest with the two healths to the slanted structure next to it, and then run a ramp from the stairs below up to that bridge. That would get you started, but you should find a way to extend that idea to the rest of the map; i don't think its impossible. Another possible jumping off point would be near the quad over the green armor by the glass, that could easily become an overhanging area, and you could shrink the pointless tower down to a large block and connect it with a ramp, making it possible to jump from one top part to the other across the map (using the diagonal ramp you already have between the tower and the teledest). Put spawns and armor up there, rockets, maybe make the floor thin enough that the players below can rocket you off.... Then we're starting to have a map, rather than a flat slab with weapon jumps and boring fights/rifle lameness. I like where you're going, but the layout still needs work before you start into the pretty stuff that I have absolutely no idea about.
Except that the brick is ugly. Its too stark. Looks even worse with texreduce, fwiw. Maybe others disagree :-)
Keep it up!
PS: While I was writing this comment I went ahead and used my kindergarten or below level mapping skills to do up some of the ideas I said above. I'll show it to you when you're back on irc.