Just a random thought, but something future dating sims/games might do is make use of the various Stats to influence the endings at the end of the game. Right now, they obviously affect whoever you may or may not be romancing, but it does seem like they should have an impact elsewhere.
Not that a person would have to do 100 endings or anything like that, but if one was to take Roommates as an example, if Anne had Activity up to say, 50, there could have been some text, "I found several new interests while in college. Who would have ever thought I would actually make the university's field hockey team?"
Of course, this would have to work for what is meant for the game, but I think it could add that little more personal touch a lot of people also seem to like.