I'm sorry if I've overlooked this in the rules book, but I've not been able to figure this out. In the game of Rogue Trader I'm ramping up to right now, my friend rolled for the lowest possible ship points with the highest possible profit factor (or close to that, he's got 30 SP and 60PF). This fits in well with his background. His Rogue Trader was the commander of part of the Imperial Guard that got embroiled in a rather ugly and large civil war. However, he ended up on the losing side. Too inconvient and powerful to execute (it would sparked further conflict), he was given a Warrant of Trade and a presumed unarmed Shrike Raider (it has the wolf in sheeps clothing trait), and was sent off on his way. Because of this, a very hefty portion of his crew is former Imperial Guard and PDF under his command that he managed to get spared on the condition that they join his crew.
He's decided that he wants to use boarding actions as a primary method of combat, and asked if in exchange for some profit factor to even it out, could he get bonuses for the fact that he has a crew of professional killers that he's had experience commanding in combat for years. I'm totally ok with this, but I'm not sure how to represent this in the rules. I've been able to find the various bonuses for crew size and such, but none for the quality of the crew being used outside of the NPC crew quality charts. How do I represent the fact that his boarding crews are going to consist of former Stormtroopers?