I find they always deepen my head-lore for the universe and strenghten my immersion, like I’ve lived through a reset or found myself on the other side of a boundary and am in an older or future simulation.
I think a fitting end to the Void Arc and the game as a whole would be her return causing a “perfect” simulation that will end up being the sims final form. Though I am not apposed to more upgrades to world gen after this either, would just be a good time to do one.