Anything on a turret/gimbal will need pitch and yaw in addition to a fire/thrust.
Most device will need a power level interface.
Monitors, sirens/speakers/kalaxons, holoprojectors
Automated crafting systems?
Radar and other "active" send out some sort of signal sensors
Emergency internal shields for temporary shielding of hull breach or fire suppresent
Sensors could be expanded too. I don't know how much should be magic for performance/gameplay reasons, if it should be a magic monolithic sensor system like star trek or individual devices on gimbals that can be upgraded:
Telescope, used to locate planets/moons to calculate the ship's position
Radar for range finding
Camera (with or without zoom) to provide view of a target
Temperature, barometer, accelerometers, magnomiter, radiationmeter
Internal atmosphere sensors
IR, UV, XRay, Gamma telescopes
Spectrometer or some other ore prospecting sensor