I think it looks bloody excellent and we should use it. A map object seems the most logical thing to incorporate it as; an automated anti-aircraft gun on a military base or warship. It'd be easy enough to add a control chair with a computer screen in front of it, and a heat shield at the base of the barrels.
As a PHALANX anti-infantry turret, this one would be a bit overkill. It would cause huge amounts of collateral damage if pointed at anything ground-level. The same turret (with controls) and a single-barreled machine gun would be a more sensible choice for that.
Here's an interesting idea -- we could turn the little corridors between base facilities into special building sites where you could buy things like turrets, weapon lockers (part of your team might start out unarmed and unarmoured), destructable blast doors, that sort of thing. Only one building per corridor. That would make base attacks a little more interesting, and make up for the highly disproportionate number of aliens to be defeated.
Regards,
Winter
