Honestly, I just wish they'd make up some worlds themselves. I never liked the reliance on real people, places and trends that the Sims 4 has adopted. I want to see more fantastical worlds or fictional locations like the magic realm. A goblin bog or fairy tree houses and explorable caves. I'd like strange, crooked trees and weird insect life. Structures inspired by Tim Burton or Dr. Seuss or Bloom County/Outland. Things like that.
I just always felt like the Sims were their own universe and they just had parallels to ours. If they were more unique to themselves, I think the game wouldn't have cornered itself to be so pc and cautious and "safe" and worried about socially offending all the time. It wouldn't have to be so self-conscious because the rules of the Simverse belongs to the Sims and there could be an "anything goes" flow to it. It would still mimic our own lives (like Sims 2 did so well) and the humor would still be there, but sensitive people wouldn't find it so familiar as to take anything personally.
We could even have a larger variety of skin, hair and eye colors that way. Children could be born with blue hair because it wouldn't be assumed it's "dyed" when they get older. There could be optional odd eye textures that are more luminescent or multicolored. Just little extra options to make the Sims seem more special and otherworldly and a little bit "beyond" our universe.
But I'm getting carried away now.