Ok, I'm satisfied with the port airlock (the one on the side of the base station). It has great functionality, with outer and inner doors that work together to never both be open at the same time. It also has warning lights that blink when the outer door is either open, or will
open if the inner doors are closed! I'm really proud of that one.
I also made the facade of the starboard airlock, matching the port one, but I didn't add all the same mechanisms since it will be the entry point for the minecart ship tour.
Finally, I marked off a few decks & maintenance decks above the port airlock, just for the heck of it.