Toddler patch was great. Even if it's not paid DLC, it really added a lot to my game. It was at the top of my list of missing base game features, and I'm glad they took the time to bring them back after a botched launch.
Parenthood was amazing too. It really added new dimensions to my family saves. And even though I didn't get it, I have to admit that Vampires is pretty well-done from what I hear.
Cats and Dogs got a more mixed reception, but except for a few missing things, I'm satisfied with it overall.