Hello all, I was looking for exactly this kind of topic. When setting up the likes/dislikes for my family I started playing since I got Cottage Living, I thought it would be nice if system could be expanded. Especially the hobbies/skills category would be great to expand. Think about hiking, stargazing, swimming, cross-stitching, taking care of animals, flower arranging, being at the beach, and so on. It would be great to have a boosted moodlet for them, it'll make the sims more unique and individual with their own likes and dislikes. I also agree with another post I saw in this topic, that there should be a favourite or disliked food. Imagine a child loving vegetables and getting a happy moodlet from it. :D
And one thing that should be improved is that sims should do more things they like, and avoid more the things they dislike. For example I have some sims that dislike fitness, but they still decide by themselves to do some exercise and then they get an unhappy mood. :P
But there's so much more potential for this feature! 😃