For VV5...
Let nursing mothers do somthing besides sit around and show the baby things. Maybe people could get an upgrade in technology that allowed baby slings, so nursing mothers could work. Also, make huts be built faster! When I have a small village with 1-2 builders, it gets annoying having the hut stuck at 38%. Also, make the game inland. That would be different. And, make the nursery school/ child education DO somthing. It might also be nice to have new puzzles that you can unlock with 1000000 tech points or somthing. Finally, maybe there could be events where the insects migrate and you do not have berries for a few hours, or your fishing nets broke and you cannot make new ones for x amount of time. Just so that once you have all the food sources, you don't have to help your little peeps.
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I'm going to take the time right now to plug my fanfics. Aspen's story and Lilihia and the Tree.