Sims 4 Suggestions for BASE GAME

I like the idea of stepparents because I tried to have a sim become the mom of a sim that she wasn't og the mom of, but she was married to the dad sim, and it was disappointing that it was impossible to create that relationship. I also would like, as I said somewhere else, the ability for more than one played / created household to live on the same lot in different houses or in a duplex or apartment building or something like that. Hm I guess they could live in the same apartment building in city living, I didn't think about that. But it would be cool to be able to control them at the same time, too. And to be able to do the thing outside of city living. Anyway. Yeh.