Once you can assign Chief Medical Officer, Chief Engineer, Chief of Security and the like, what about adding it to the "Alt your Boff" thing they keep talking about?
If it's a medical emergency, you're suddenly playing your CMO.
Plasma leak in the Jeffries Tube? Suddenly you're playing the Chief Engineer.
Anomalous energy-based life form wreaking havoc in the Holodeck? Bam, you're playing your Chief Science Officer.
Got boarded while your shields were down? Play your Chief of Security and lead a security team through the corridors, and then bring them to the brig.
Plenty of opportunities, and this will make your Boffs feel more "real".
Honestly, I'm not a huge fan of this idea; I like having my BOffs feel more "real", but I would rather play my Captain & be the star of my show period, with my BOffs just "back-up" characters. That's just the narcissist in me, I guess lol