The old Imperium setting is the best in my opinion. I would love to see some updated info with the Silent Death timeline thrown in. What I would also think might be good (from my point, but also probably from a financial standpoint) is to see house books for some of the imperium that was never given any details. If you stated it out in a few different ways, those of us who still use the Privateers rules would buy it as well as the HARP SF players. The old nightbrood first edition book had a list of a ton of houses that had zero info on them, I have done write ups on several already. (Sul Huvascar Reserves, Castor Shires, Teru Fastness so far.) And would happily provide what I wrote up for publication.