i think the map is superb mutts - cant really think of any decent critiscisms beyond what steve said already, but just for the sake of it ill come up with a couple of comments;
i was thinking at first that maybe the attackers would have a hard time on the run up to the first gate if the defenders had a couple of good snipers, but thats tough to tell without playing against human opponents. then again maybe thats not a bad thing anyway as it lets other defenders get into position....
i would be tempted to take out the shock rifles as i think there were a couple of spots that could be a bit spammy - but then again you seem to have provided a couple of routes to each objective so again maybe thats not really a problem....
the map is definitely big and the first time you run through it, its pretty easy to get confused. i dont think you should change the layout though, as it seems to flow quite well once you get used to it. besides the same thing could be said about some of the league custom maps but ppl soon get used to them.
from a cosmetic viewpoint, i like the way youve put in plenty of control panel / display type things, as it makes a change from looking at the wall textures. the final section, as steve said looks superb.
on the whole, a damn good job i reckon