As for the star chart, yes, has that too, and I will drag that in as well in due course, but it is early days for the project yet. In general terms, as there are a bunch of different C and S editions, one begins by rolling to see whether the character is well-aspected, neutrally aspected, or poorly aspected, and then one rolls for a star sign, each of which has bonuses or penalties associated with certain types of professions. If one ends up poorly aspected, at least in the newer additions, one has to roll for some sort of flaw, and if one ends up well aspected one has to roll for some sort of benefit.
At one point, in consequence, we ended up with the (poorly aspected, therefore flawed) near-sighted yeoman archer. I was half tempted to offer to let the player rolling this little drama out in character creation off the hook, but he said it was about his luck and took the character.
This would be a natural to add into a BRP system.
The feudal manor material is very handy for mapping out the world--my club comes out of a wargaming tradition, and so it is often times very handy to know how many knights, and other miscellaneous trouble makers can be found on any given manor or castle.