Parenthood refresh would be a really cool! I’d love to see social events like family reunion. And with that sims reacting and understanding someone as an aunt/uncle or cousin as well.
I’d also like to see the option of field trips and parents can volunteer.
Family actives like a scavenger hunts, pumpkin or berry picking, maybe even an option to have an official family dinner where everyone sits down and eats. Kind Of like the date function but revamped for a family sit down.
Also a town dance hall that functions as a place where you can hold like a prom or a wedding officially.