Re: Family Tree vs Culling
I don't have a definitive answer but only what works for me and it may be different on various platforms. I'm on console.
About once a week I have my own culling session. I go through Other Households and cull randoms. I show no mercy. I keep townies down to below 100. Usually around 70ish on my most brutal days. I'm careful not to delete anyone important to game lore like Crumplebottoms, etc. I keep people that I recognise as pub owners, stall holders although I have deleted them before and they were of course just replaced. I'm not ashamed to admit I delete the ones in the weirdest outfits...step forward those in short shorts with Elton glasses and an eyeball ring and say farewell to the game!
This works for me and I've never lost anyone from family trees or any Sims that even have friendships with my Sims. By taking over the culling myself I choose the victims!