Pros: Well, let me start off by saying that this is very good for a dev texture map. I like to see that you put effort into this and I think the turnout is great. Let me start off by saying that the layout is very well done. It is well balanced and there are lots of places for people to get behind cover, yet there are also places for people to run and gun. The brushwork overall is well done and it is nice to see more than boxes in the map. The spikes, curves, and bridges make the map a lot better than your average dev map. It is also nice to see that you added lighting to this map and it makes the map feel like it is complete and that there was a lot of effort into this. The texture alignment is good and the layout is good as well.
Cons: Well, the edge walls of the map are kind of bland and ugly. It would have been nicer if you hadn't used that texture on the entire wall, maybe alternated between Grey and Orange. Some decals or some detail on the walls would also be nice to give them some pizazz.
Improvements: If I were you, I would make a version of this map that isn't dev texture. I think it would turn out really good and it would make the map look beautiful. So that is my suggestion to you, drop the dev and go with real textures.
Notes: Let me know if this helped!