Just got the firefly boardgame a few weeks ago and have a couple group games and two solo plays done.
One thing I can't figure out yet is why you wouldn't always assign your entire crew to a job.
No matter if they are assigned they are need to be payed and will get disgruntled if you do an immoral job and they are moral, so the only reason I can see is if you are ready doing a Niska job and don't want to risk them getting killed.
I am still playing the stock game, no expansions yet. Really looking forward to snagging pirates and bounty hunters, the added player interaction seems to be the one glaring hole in the mechanics so far.