Well, y'know, the idea of destroying 'em generators is nice, but... I enjoyed more with the design and appearance of the map. It doesn't look like a synthetic, no-needless-details-including battlefield, but like a real fancy facility/station/whatever. Just like when you run down the Nexus6 hallway, you don't feel the atmosphere of the place, you only think of a possible dretch hiding behind a pipe... here it's not all like that.
I wanna suggest an idea, sadly not having opportunity to make it myself - exam session strikes back. The atmosphere of the map is perfect for some horror/"Alien-3"/escape-from-monsters scenario.
You can take the map, add some similar locations (corridors, rooms) and make an objective for humans: to escape the complex in, say, 15 minutes, given 2-3 exits from the map (when a human touches the exit, team wins) and a global objective - to pull the switch to open them. Alien spawn system's the same, but humans are first scattered around the map and need to get together at least in the group of 3 or 4 to build a repeater and get a spawn and a couple of invulnerable turrets. Then, after 15 minutes, defence dreaks down and all aliens spawn in front of human base (a kind of forced assault), making them pray their gods.
Sorry for blablabla, but it came suddenly and I was afraid to lose the point - so I posted it here.