More auxiliary command stations, to provide more positions for officers, and allow officers to have more extensive career histories:
Much like how the existing command stations such as "Science Department", "Engineering" etc function, where the officer assigned gives their full bonus, and the ship captain a half bonus to a function.
Things like:
Terraforming Control, for coordinating the terraforming modules of the ship - officer position would be "Planetologist", uses the "Terraforming" bonus of the officer.
Xenolinguistics Department, for dealing with aliens - officer would be "Xenolinguist", uses the "Communications" bonus
Astrophysics Department, for jump stabilisation ships - officer would be "Astrophysicist", using the "Production" bonus
Information Warfare Centre, for ELINT ships - officer would be "Information Warfare Officer", using the "Intelligence" bonus
Astrogeology Department, for orbital mining ships - officer would be "Astrogeologist", using the "Mining" bonus