Thanks Meridian.
Well, I have created both deployable turrets for Aliens and Humans opponents. A few are available also on the player side. Check my resources thread for screenshots.
I hope the Aliens threw grenades more often, because I plan to put quite a few of them in the Alien deploysment.
I made two type of Alien turrets. One sonic and the other spit out Headhugger eggs by lots of them. Headhuggers can make any players soldier turn into zombie and then later spawn into Spitters and Megaworm, both lay or spit Headhugger eggs by heaps.
This give "bug hunt" a whole new meaning in any of my ufo missions involving aliens..