All in all I dont find the map to be all that bad... Altho I'd say it would rather go towards an artistic attempt rather than a DM map. Corridors are to narrow and Weapon placement is off and to many paths end in a dead end...
To change it to a DM map Id have following few ideas:
1. Put it all to one level, perhaps only 2 stairs to reach the hangar or something, keep the flow circular, no dead ends
2. To make it more "spaceship like" use more diagonals. Less cubic building, that also helps the flow of the game
3. Weapon placement, put fewer weapons but better placed
(ps I have a bug with the skybox when I look out through the glass window where the fighters fly, maybe thats just me, but check it out again)
All in all not badly made, and I think the space ships are awesome!!