Things Sims 4 needs before I'm satisfied:
- Personality/emotions overhaul
- Freed babies
- Torch (Not even memeing, I just love him)
- CAW
- Chemistry System, and a way to make one sim crush on another without the feeling being mutual
- PlantSim overhaul & more occult states
- Stage Magician career, hopefully an active one
- Bands
It had a rough start and there's tons of problems that still need to be addressed, but Sims 4 is getting there. I doubt it can supplant Sims 2 as my favorite iteration, but it made a lot of progress over the years. It's finally coming into its own.