I think this may have already been said,but I think that you should be able to click on a villager,and see their family tree,all the way to when the game first started.There should be pictures of the villagers with their names underneath.I also think that once you have level 2 in the culture tech area,tomb stones should have little carved photos of the villagerthat was buried there.Just a thought.I hope no one *glares at toxicsteweater* says my idea isn't very good.
I also think that if a nursing mother dies,another mother takes over the baby.It's sad for your baby to dissapear when the mother just doesn't quite make it.

EDIT:I just though of something.When two people breed many times in a row,they are married.They can breed with other people,but if they do enough times to get married,the villager that was already maried is now divorcied.I think that should show up on their family trees,like,if their spouse is dead,or there divorced,the line that connecctes them should be red.