I was worried that making things more complex might take up too much space for me to also include it as a shore leave location. That said I do have some space to play around with, but I might just flesh out what's already there instead of adding extra stuff, like a new room for example.
I think the puzzle is not obvious at first glance, but being able to turn off the NYMPHS completely is quite the benefit. Players might make a connection there, as passwords like these might be an important date, or perhaps the name of a pet, since the cat is something that would probably grab their attention. It can also be "solved" by a character that can do some hacking , with some risk involved of course. I didn't have time to playtest it yet, but adding some sort of stronger hint is not out of the question.