Aighty, I'm currently working on my first release-quality map. ns_incubus. It is standard-ish but has a few special things including:
In marine start- a halfwall with 1 way glass that can be broken but has a "blast shield" marines can raise to help protect it (that removes the ability to see thru it though)
A "hole" in the hull of the station that will suck out anyone in the room if the force field it lowered (must be lowered inside the room, so it's a jihad move). This is in a major crossroads room, so both teams will have to be wary near here (this may be removed, as it's proving hard as hell to get the push triggers right)
a freezer with a frozen floor (variable traction anyone?

) to make for some interesting "slide fights" (icy floor + skulkleap w/ celerity = win?)
various other elements to make it seem like a human vessel that haven't been included before (Mess hall, food storage, restrooms, ect)
If anyone has some good textures for, say, restrooms, I would dearly like to use them. I'm horrible at making my own textures