I would like completely unplayed sims to do these kinds of things so that when you meet a sim, they aren't just blank. They could have a home, relationships and, mainly, skills and careers that fit their personality.
However, I wouldn't like sims I'm playing doing this. If I spend a lot of time building a home and decorating it, I don't want it to suddenly change randomly. Same goes for "randomly" divorcing, abandoning pets, etc. This can make a huge change in the stories I'm trying to tell. I want control over that.
I like the current autonomous actions and only wish they were more influenced by traits, aspirations and relationships, rather than sims randomly deciding to interact with strangers or doing the same actions over and over again. That way, sims would fight with sims they don't like, flirt with sims they have already flirted with and such.
