Just been playing DXMP again today, ever noticed the map "14_OceanLab_Lab.dx"?, the one with where you have to go through all that crap to the Minisub, well looking around I noticed they is quite a few places to fight on and a little bit of stealth, and of course DXMP map potencial!...I know its quite n00bish to convert some maps but I can really see a good map being made out of this.
Spawn Rooms?, one where you start, maybe make some kind of trailer to put it in, one in each terminal thingys hanging up from the water (3 in total) and 1 or 2 in the underwater parts.
Heh..Even gives a excuse to use Aqualung.