After a solo run around the map, I have some suggestions. These are only my opinions, sorry if Im wrong in any of these (and sorry for my poor english). I played the A4 version, before the release of A5
1- I found the layout very hard to follow. I got lost many times trying to get from point A to B and more times for getting from A or B to C. Maybe if the map is played with other players it will be easier to know where to go. I would suggest adding more signs. I sadly didn't take screens of places where signs could be useful. Working in the signs for red players would be a good start.
2-
Instead of having so many lights, you can make this place outdoors. It would also help to guide players around the map, making the surroundings of this point distinctive
3-
Players that fall in this place before a point is capped have no way to escape. The path for red players is blocked, it can be frustraiting to fall there, go to the stairs and find that the door is closed.
4-
Some spawns are inside the resupply is regeneration area. The player respawn hearing the resupply sound. This is not a big deal, but I wanted to mention it.
5- One of the points has the entrance for the blue team blocked after another point is capped. This helps the red team to defend it better. I haven't tried the map on multiplayer to see the effects on gameplay, but wouldn't this change help the red team a bit too much? What's the thinking behind of this change?
All around, it looks like a good map, with tons of different paths for classes like spies and scouts. I will give you more thoughts about it after playing the map in multiplayer.