Would it be a worthy idea to be able to send your Officers on shore leave for a large reduction in CR/month?
In my latest play through I'm constantly changing between a small and large fleet, often ending up with a bunch of Officers doing nothing but eating my credits for months at a time, but also not wanting to fire them because I'm going to need them at some point and they took time to train.
This probably isn't that much of an issue late game when you have income sorted, but early game before you have all that setup it can really start to eat into your monthly costs, especially if you've gotten lucky and found quite a few of those fancy level 7 Officers floating around. Not really sure how you would go about recalling them, perhaps it can work a little like the contacts tab, have a button that requests them to return to your fleet if you're around the Core.