How about having relationships, 3-9 year olds could make friends and adults could too. Maybe it could clue to who the breed with. I would like to see more cooperation between father and mother. They could take turns caring for the baby and start a family. Each family could have their own hut. Maybe villagers could spend time with eachother, in case you haven't noticed, you dont see any connection between adults unless they are:
a) telling a joke/listening to a joke
b) telling or listening to a story
c) embracing
Make it like real life in those days, they have hearts. They aren't robots... well, maybe partly, but anyway.
Pets might be nice.