I'm new here, and to the games (which I love!) but I had a few suggestions. I do realize the game is very late in its stages and suggestions at this point are probably not going to get implemented, but since I was new to the game, I figured I'd give it a shot anyway, since suggestions and ideas never hurt.

I do find that there's little for the children to do (pick up collections) and they are just screen fodder for the most part until they turn 14. I find myself wishing time would just pass already so I could get them trained in their skills!
But, as in real life, the children should have some kind of 'relationship' skill. Children play together - this should raise the skill. You could initiate the child's play (dropping children onto children, only works until age 13, and people age 14+ don't have any effect on them.) These skills, too, can effect things later - reclusive children (those who never played with other children) obviously wouldn't make good doctors, since they don't really do well around other people. But children who were very active would maybe get a boost to any skill that required being around other people, and maybe a boost to parenting skills later.
Another thing I've found is that when I have builders that are only at adept, and all my housing is built, there's nothing for them to raise their skill on! Unless I want to increase the population and force them to build additional housing. (I think this starts at 13 people? 14 people?) That was kind of annoying. It would be nice if builders could upgrade existing housing - add a porch or something (I know, it's a tropical island...) or I love the idea of having island events like hurricanes or high winds that would damage existing structures, forcing repair.
The whole mating thing is just kinda weird...into the house you go, out comes the dad (often just running on back to his duties) and mom with a little bundle. It would be interesting if they actually came out pregnant (ok, so SOME time advancement...) and were only able to do light work for a short period of time before giving birth. 2 years is a long time to be without that one person. I also agree that the mothers should be able to do SOMEthing during the time when they are nursing and caring for the infant - maybe cooking? Let the dad gather the ingredients while the mother cooks. Cooking skill could be something else implemented. (so many ideas!) So, if the father is dropped on to a mother who is caring for an infant, they would automatically go foraging or whatever, to bring back food to be prepared/cooked - much like the cauldron/stew works.
Ok, I think that's enough for today. :P