I figured they actually would be easily detachable, since the empire probably wants very easily repaired ships. If a part is malfunctioning, just remove it and pop on a new one, and it's likely a quick process. Whether or not it's quick enough to slap them on on the way out the door I dunno, but I was thinking that maybe part of the complement could be stored in a disassembled state, and assembled in combat as needed, with only a few flights ready to go immediately. It would definitely save storage space, but the premise of the Empire using a capital ship where this is a necessity is what doesn't actually make any sense to me.