Which aspect must be BG part in TS5?

My vote goes to chores (dusting/vacuuming, laundry, lawn mowing, window cleaning).

Weather sounds nice in theory, but with each world now having a defined, unchangeable climate, I'd rather not have that forced on me. I hope they change that back in Sims 5, with a list of maybe six climates that the player can attach to the worlds however they see fit. (Although even then I'd probably still prefer chores in BG.)