I had a lot more played sims in my TS3 saves, but in TS4 I'm very conservative. I had a save corruption happen after playing several years in Sims 3. I did manage to get all my sims "rescued," saved, and placed in separate saves, but the corruption put a scare in me. Plus, my computer, which was a higher range setup, was beginning to struggle with the TS3 game.
So now, in Sims 4, I only play one household per save, no rotational gameplay. I use very few rental units too--less than six at most and in just a few saves. I do use mods and CC but am very careful with them. I own most of the packs and kits. At this point, the only things I don't own are the SpongeBob kits.
I set the max played sims at 80, but don't have any saves that even reach 15 sims, most are less than 8. I use custom lifespans that are longer than the default Long. I don't really do legacies, at least not for generation after generation; I will create new saves if families get too large.
