You know what I just thought of, I don't know if they ever did this in Sims 2 (I play both and have for years), but maybe children should form a group for a social outing with their peers. I know sometimes (with Generations) there will be random options for a play-date with another household, so why can't children form groups amongst themselves? I think they should have their own set of interactions with classic childhood games like duck duck goose, monkey in the middle, four square, kickball etc. I don't know, just a thought as to how child's play in the Sims can be improved for future EP's.
Personally though, I know people on the official Sims 3 forums are posting threads begging to make the game more realistic, me I personally don't want that. Sure this is a LIFE Simulation, but I want them to keep the unrealistic elements too. I kind of like having the town overpowered with vampires and making my Sim an instant celebrity, and even growing silly things on the ground. Veggie burgers anyone?