First, the humor. Let them out of the vault, and they can give you the right hand to open the door.

But seriously: how in the heck do these doors work? Apparently, somebody that is inside the vault cannot get out without somebody outside the vault with security clearance to let them out.

In Episode IV, we see that if there is any damage to the power supplies, or the controls to the door, the doors will slam shut and be locked. What is the security threat that this system is designed to be able to handle? If your goal is to make sure that your security team is able to get wherever you need to go, this fails.

If however, you are constantly being threatened, and you need to make sure that the place can be trivially locked down to the point that unauthorized personnel will be completely trapped, even if authorized personnel cannot move either, then this is a decent system.

What does it say about the Empire's design when the only reasonable scenario that it is proper for is the scenario of constantly being attacked by villain after villain every week? When the "villain of the week" TV show format, with the Empire as the good guy, is the whole design of your base and your security system?

Well clearly, the invading Rebels are just another villain to be defeated. And if they do manage to get the Peace Moon plans out, even if being defeated, that just means that it is the season-ending cliffhanger and the start of the next season will show the plans being recovered and the evil Rebels being de...

Well, almost. Clearly these new Rebels are going to be a whole season-long story arc. Just wait until the Emperor can bring the big guns to bear at the end of next season.

(Side note: I imagine the horror of an insane version of Pinkie Pie, with a party cannon the size of the second Death Star and a motto of "a party to die for".)

— Keybounce