This is going to sound like heresy, but as a Referee you've got to ask yourself:
what do you want to do with this book?
Mercenary is about being a professional soldier, working for money and for a generous Patron with more credits than sense. If you look at the book as a guide to living the life as a soldier of fortune, this is it.
The tech is not nearly so relevant as the lifestyle: shady back room deals, wealthy clients shaking hands over brandy and cigars in some gentleman's club, sweating suited couriers sitting in sweltering bars in some dustball in the back end of a town on some backwoods planet waiting for the clients to turn up so he can hand over the Samsonite case chained to his arm, containing the client's orders and contract, and then a whole lot of fun in some swamp world, blacked-out faces, crappy fatigues chafing, up to the waist in swamp water, picking off armed, brassed-off locals with some eyeball-achingly primitive rifle.
Same kind of deal with the rest of the books - Scout, Agent, Scoundrel etc. The focus is on the people, not really on the tech. Well, apart from High Guard - I've not heard of many people who focus on the Naval careers. Everybody seems to go straight for the ship design engine.
