Now that I've actually played it, I can give commentary.
-The map is far too huge. I can choose a ridiculously long walk through a series of hallways, or that... thing in the center. Even as a scout, these hallways take too long to go through, and I can't imagine heavies or soldiers wanting to use them at all.
-There is too much room. This makes ambushing as a pyro difficult, as they can easily see you coming.
-The center building seems to lack purpose. Why would I want to enter it, when there is literally nothing but dead ends?
-The vent is rather redundant. It puts you, what, 2 seconds' walk from the main spawn door?
-There is nowhere for spies to hide. At all.
-Soldiers and demos can stand on top of the electric fence. Not game-breaking, but probably unintended.
-The 'ambushing' spots in the intel room do a poor job of concealing players-especially pyros, because their flamer sticks out so far.
Good, Im not the only one that thinks its huge.
The vent is there to prevent spawn camping.
The bunker originally had nothing there, It was to build forward bases there.
I'll fix these in B2