Actually that system was to be expanded originally... The dep heads were supposed to "consume" doffs to enhance their own stats and First officer was supposed to receive special Number 1 powers and even number one play...
But as of right now, does NOTHING other than choosing which picture to display when a BOFF reads a report, right?
At least, I haven't found any differences...
Like MANY things in this game, it was half-assed to start, and then abandoned rather than fixed/finished/removed. So many things that would have been cool with a little more planning/work, but were just put out and abandoned instead
Well Dept heads have their own Doff missions.