Adding a feature that if you have docking rights to a citadel that you can fuel it by opening the fuel bay and dropping in fuel to online modules.
Would have to not be able to see the contents of the hangar without the need for roles, and the move would have to be one way.
Would online modules active in the citadel instantly, where moving fuel in with roles would allow selection of what modules or in what order become active, and allow anyone to become a “starbase fueler” without roles.
Could also save clones, fitting, etc for allies/neutrals on derelict citadels.
Irony would be to fuel a war decced citadel for giggles to make it harder for attackers to kill.
Would need to give a notice of who added fuel and when to the owners. Though it wouldnt be entirely necessary but would make refueling contracts viable with a notice of delivery.