Things I've found--
*The alien default base is terrible
*The upstairs area is confusing, similar to Dark. Too much hallway and not enough rooms.
*

You can build inside that thing by the humans base. On the ceiling between the stairs.
* I am a little confused by some of those lights that are just coming out of the ceiling. I suppose you just wanted it to look futuristic but it seems strange.
*I am a little concerned about being able to build on top in the outside area. I haven't tried this in a real game, but it might be an unfair advantage for the humans.
*

These lights aren't solid you can float through them. This probably won't be that big of a deal but just mentioning it.
That's all for now, I'll write again if I find anything else. Just wanted to let you know about these things.