if ur next map is gunna be where ur in the aliens POV, a map that i would check out is Aliens: Special Edition
(or something like that)
it's mainly based off the first alien movie, and pretty well i might add, the alien starts out as a chest burster, and runs around, until it grows bigger, which is about every 2 1/2 min to about every 5-10 min... or something like that.
instead of having the predators standing around (in one of your prev. screen shots, you could have him uncloak, with that player 161 starforge trick)
that would be pretty cool instead of a dumbfounded crabface twiddling his thunbs until several xenomorphs rape him.
as an ending, maybe the company wants you to capture an xenomorph alive, crew expendable, etc etc, the company gets their alien, but at a dear cost, it gets loose on their ship because of a careless scientist, and rampages through that ship, and the marines (or whoevers left at this point) dont give a

, since according to the company, their nothing but expendable, so they go and 'expend' themselves out of duty, and tell them to f' off when they get a distress call from the ship plagued with an alien roaming about...
you dont have to use it, its just something that came to mind.