[@Cyclone] Just to confirm, Logos's tower/forge of creation is known as the Citadel, and Zephy's floating castle is the Celestial Citadel, right?

So, as it's implied through the text, the Citadel is host to  variety of automated defenses and offenses which would hamper a god's assault on it, giving Logos time to return should he leave it. And if he's at thencontrols... good luck. It serves as his seat of power and the backup archive for all of his creations, along with the necessary means of creation for his creations.

Other than being a big fancy palace for Zephyrion to kick his blustery feet up... what does the Celestial Citadel do?