I was reading that there would be quests for tribes to do deliever items for their village and patrol their borders, and was thinking another cool "quest" would be to have to repair their town. It would be kinga like UO(ultima Online) where you had to open your door to refresh your house but a little more technical. And if no one does it for a week or 2 then your town would either "fall" or another tribe could come in a and take over.