Honor Harrington's worlds seem like that they will be detailed elsewhere but rather than wasting any further effort, may I suggest to Hunter that he would be better pursue a license with the Asimov estate for a Foundation RPG (one that would take us from the early days of US Robotics right through to Pax Galaxia), as there are many more Asimov fans out there than HH (as a librarian, I know) combine it with some of the revisionisms of the 3Bs and killer art like from Rendocity, and you would have something all Asimov fans would love to get their hands on. Plus, it would provide an excellent resource for Traveller...