So the heart of the idea is that you would have an area inside or outside of a fort, as well as a new skill in the 'other skills' category with architecture, alchemy and cleaning, something along the lines of Innkeeping or Hospitality. I know that dwarves aren't known throughout the miscellaneous fantasy universes as being the most hospitable creatures, but you'd think that a dwarven fort no matter how big or small would attract a wanderer every now and then, besides just werewolves and other disastrous things. I don't know if there are wandering npc adventurer types but if i understand some of the things ive read in legends mode there are some npcs of each race that just kind of wander around and fight things. So what if every once in a while an adventurer or traveling merchant (another idea good on its own to implement, random solitary merchants with less voluminous but more diverse inventories) comes across the fort, this could happen more as the fort grows in size and reputation, and they stay a few weeks offering up rare items, gems, or coins in return. Dwarves may choose to go and speak with the visitors during their break/rest time, which will increase the forts reputation throughout the world as word of the inhabitants deeds (or misdeeds) spreads. The zone itself would be sort of like a hospital, instead of cloth and soap and splints you'd keep track of food, engravings, impressiveness (through displayed and constructed assets and engravings). Where the new skill is concerned, one or two dwarves could be assigned to it with tasks like feeding guests (taking them their meals like a prisoner or patient), keeping guests occupied or entertained when they arent wandering around the fort, and maybe if a wanderer likes the fort enough the player can be prompted with them asking if they can remain and become a citizen of the fort. Again I know dwarves arent the most social creatures but youd think thered be at least one human or elf around sometimes. Remember that stereotypical elf/dwarf animosity doesnt seem to exist in DF.