Personaly, I would like to see something describing the importance of ancestral descent; lineage for PC's and how they can be incorporated into a game. Perhaps blood talents as descibed in HARP may be an option.
Also something on thieves guild(s)/gang(s). Something along the lines of a multiple gangs that rule certain areas of a city who have streets as boundries etc. Something for a future TGA issue perhaps?
That's it for now.