I'm fine with Sims 4 continuing to 2024 and beyond, if the pack concepts interest me sufficiently. I don't think I can bear to go through the entire process again with a 5th game. The only thing that would tempt me at this point is weather and properly layered clothing in the base game.
I'd honestly rather have a new Sims Medieval with a better sandbox mode than Sims 5. Or Sims in a different time period altogether (Regency or Ancient Roman would be my preference but one or some others would work for me).