The map is way too small, you can barely fit down most halls. Counter Strike: Source has a great version of Complex that is the perfect size.
I have the map from CSS, and if any of the developers want to take a look, I can send it to them. But as of now, Complex isn't even playable. The part with the pillars, you can't even move through it.
Another thing that should be changed is you should be able to fall of ledge, you can jump so you can't say you can't fall because GE64 wouldn't let you.