Hence my like of Administrative Officer, I don't feel it's that bad, or Bridge Officer.
I think having XO as an actual 2ic would be more fitting personally since they are all ready in command of the Bridge Crew/Bridge (Horizon destination, weapons firing, ship to ship communications.) But since that's not likely going to happen and am not too fussed either way I'm just suggesting the job name change.
Yeah, causing more confusion when they have the name and responsibilities of XO, except for the one odd fact they are not 2ic in an emergency situation.