In light of a possible dwarf supplement book, I suggest Dwarfen Clan Sheets. Every dwarf player knows how important the clan is for his/her dwarf and that doesn't change, when the dwarf leaves the karaz and goes on adventures. Especially when they go on adventures to gather glory and wealth for the clan.
Reputation and tradition are very important to dwarfs. Why not give the fellow dwarf player a Dwarfs Clan Sheet to show his stand in his clan community? Much like the political favour sheets from Edge of Night. A tracker could progress if the dwarf experiences honorable quests, slays many greenskins, sends money and artifacts back to his karaz and helps other dwarfs. Rewards could be the option to learn Tradescraft. Only two careers have this skill, but it is so very important for every dwarf, because nearly every dwarf learns a craft from his clan.