Not an EP, maybe a GP. What I would like to see is the option for doing school (and other activities) actively. With a mod I have, all the children can chose to 'work from home'. I have an elementary school built (Generic lot) that they can travel to that has everything they need. So in that case it's more of 'go to school'. If they need to go to a park or a library, can do that too during their work-day. All of them in the household simultaneously instead of choosing just one. (Still need at least one adult to travel with then of course) I would like to see that for the careers also. If you have lets say three scientists in the household, you could take all 3 to work at the same time instead of just one. I suppose with a work from home option, if you had multiple conservationists, they could travel in a group as you actively do their daily tasks.
As for a major expansion pack (EP) for toddlers/children/teens. I find it pretty good as is now. Small improvements could be made, yes. People here have already expressed great ideas.
