What does Parenthood actually change?

I love and hate Parenthood. There's no question it adds a lot to family play. My personal favourites are the school projects and mood swings, but I also like the phases. What I don't like is that some of the character values are too easy to get whereas others feel very grindy. I think some rebalancing would be needed there, but I doubt they do it. I usually have to fight hard for my sims not to gain certain value traits. I don't want all sims to have them because they can be overpowered. For example the responsible trait is super easy to gain and it lets you autonomously work hard as an adult without negative effects + you also get better work pop ups. The frequent ask for advice pop ups also annoy me sometimes. Overall I think the pack is very much worth it, despite some annoyances.