Ok so my Rogue Trader took it upon himself to take a large population of mutants onboard one of his ships from port wander. He did this quite unprompted and just made the invitation to some under deck gangs who seemed like reasonable sorts that whoever might show up at his Dynasty's mustering area would find gainful work at the standard rates for their skill and ability. The player knows this is going to cause him a variety of issues and I'm already hinting of some of the discord with the human portions of the crew (it got mentioned in the staff meeting that requests for transfer from that vessel are up 4,000 percent). The ship that got restocked with mutants was a wolfpack raider that was at just a bit over 60 crew so now about 40% of the crew mutant..
I already have some ideas for challenges and drawbacks to this crew make up. What I'm asking for peoples assistance with are the possibility of benefits to this arrangement. For starters I was thinking that a mutant crew (especially if mutants become the majority) if treated on par with a regular crew will be a lot more morale resistant as they are used to getting spat on by everyone else. So at the very least I was thinking about reducing morale losses. Any other thoughts?
Another reason I don't necissarily want to discuss challenges involved in such a crew is my player sometimes peruses these forums.