I agree that it would be a nice challenge to try and keep some separation in family units.... i know i've done some breeding w/ dad's & daughter's, bro's & sis's, etc....

I think somehow the cave should lead to another part of the island where another whole group of islanders is living.... perhaps even an interactive version where my villagers could meet some real villagers from this forum

I like the trading idea. I also would like to see the kids do a bit more than just pick mushrooms. and for god's sake, they are on an island.... they really should know how to swim, at least in the lagoon.