Likes / Dislikes can be used to create a romantic/sexual attraction system:
Likes women
Likes men
Likes blond, brown, black,red, cc etc hair (will select based on what the game considers the color of hair to be)
Likes cc clothing, preppy clothing, the style tags and the way they're separated, also being able to create your own style tag and name it so you can choose whats considered what,:
Likes ____ traits
Likes hardworking 6+ in career
Likes laidback 5- in career or parttime
Likes self-made (independently working)
Likes makeup
Like no makeup
Like facial hair
The thing is the likes/dislikes HAVE to actually matter and make it very difficult to romance someone who has multiple dislikes stacked against you. If its just treated like a suggestion it will be so pointless.
Also make romance likes/dislikes moddable for anyone to create custom ones.
Also, likes and dislikes for worlds, so if Bella Goth doesnt like Windenburg she want not automously appear there.