As part of an Asian household, I find the lack of interactions between family members really unrealistic! Particularly parents and their children, and I don't just mean YA Parents and Toddlers. I mean Parents and their children, including the adults!
While in the West, it is normal for people to leave their parents when they are 18 its not for us. I find it sad when my sim becomes a young adult and moves out of university their own parents just treat them like a friend. There are no special interactions or anything! It would be really nice to see those, I think it would be sweet too if elderly parents still treat their (now adult) children as their babies. Or grandparents secretly spoiling their grandchildren by giving them cash or sweets.
I would really like to see more sibling interactions too - I have a family consisting of 2 parents and their 4 kids (one of every life stage) I just find it so strange when the teen and child sims ask their older (young adult) brother advice as if he was their parent. I know I have the option to turn that off, but it would be nice if there was some sort of code where siblings know that they're each other siblings and interact differently... just like how lovers would autonomously do romantic things you know?
EA Staff (Retired)