Not that great pictures make it a bigger view looking at this map with these pics it does not look like a great map.
Other than being to open in some areas, it looks like an overall pretty good map. I suggest just geo merging more objects you have placed on the ground, adding more cover, and making the boundary walls look more clean, maybe start by using double walls, then for the second level, use fence objects. 3/5.
Mwheh, I've seen this kind of comments alot recently, but it may seem to open, but in fact, it plays very well. Everything is out-balanced pefectly and the the layout works very well for me.