They could go to the graveyard sometimes and mourn the dead or take them flowers. I wish they'd have parties, luaus, holidays, etc. They could go to the village center and have village meetings, and they could elect a leader. Although they can't fish until you get to level 3 food, it would be cool if they could go ocean swimming before that and OCCASIONALLY catch something.

Elderly people should engage in eccentric behaviors. Also, if you have elderly people they might be able to take care of babies and free the mothers to get back to work, but there might also be some penalty associated with this. Embracing children should lead to more breeding points for the adults, towards being a master parent. They should also be able to PLAY with or TEACH the kids, giving them more master parent points.

When are they able to build a latrine? (I'm only up to level 2 in everything)

I also would like it if there were some way to tell how much longer a nursing mother has to nurse---something like you can tell what % complete the housing is. Maybe it would say her nursing period is X% complete.