Updated screenshots:
New area, with elevator (left) into new airducts. You can see the "pipe corridor" outside. Right around the corner are the bathrooms and bedrooms.

View from new airducts...offering a nice drop into the campy human elevator room. Elevators are about 1.5 times as fast now as well.

Bedrooms, with air-ducts linking them, plus an escape route in the ducts...

...which comes out here.

The door in this area moved back from the top of the stairs further bac to the entrance of the large basement machine room. These doors are also faster.

Hopefully, all of this will make the map a little more balanced.
My to-do for beta3 is to nerf the ducts (I accidentally made them a little too strong) and add location entities. I didn't realize that the map didn't have any!