I play a lot like the OP does. I have a main rotational save from 2014, that has been re-saved (save as ).quite a few times. And I also have a newer scenario save. I keep aging off most of the time so my families and households can experience new packs as they come along. I loosely play my households, if I get tired of one household, I will just switch over to another one I want to play. I have many households in this save, , been try to keep it around 150, which it makes it a little easier since I started a scenario save.
I play without CC and mods, so I love to see new packs and even kits come out. So far I have all the packs and kits in the sims 4 and will be getting Growing Together, in the next few days. I hope they will eventually come out with a Pajama kit, a stroller stuff pack, and toddler push toys. I would like to see group volleyball for children up, skateboarding, a sewing machine with patterns and a color wheel, to make clothing, stuffed animals, dolls, pillows, quilts, etc. i would like to see a simple clothing lot trait in which you have to buy clothes for your sims ( especially now that they have suitcases ). I would love to see some more stuff packs. Stuff Packs used to come out often, always had a little CAS, and a little build buy, and a special object. SP’s kept my game fresh and new. Kits are similar, but not anticipated by me as much as stuff packs were. I’m glad this new expansion pack Growing Together, is being made where we have more control over some things, like how close/distant family members are, and how close friends can be by similarities ( likes and dislikes.). I think the quirk system will be great for infants, I’m not sure how I’m going to like them with toddlers, but I will see. I do pretty much like to have a great deal of control over my sims. Many times my sims develop lifestyles that they are not supposed to have, so I cheat them away. I wish we had direct control over lifestyles without cheats.
I have some favorite families/households that have advanced and split up over time in my main save.
I have a hot headed painter that’s about a level 10 , with a newborn ( for several real life years now ), ready to become an infant. He has 7 other male friends ( that used to be roommates ), of his that have advanced in several different careers, one friend is now a CEO, another is an astronaught, another a programmer., one is a baseball player that lives with his girlfriend that does social media, the two of them are developing a lifestyle where they like to vacation a lot.
I have a level 10 adult doctor whose adult wife is a violinist, their married son (YA) is a programmer, while the programmers (YA) wife spends her time taking care of the household And cooking, they have a teen daughter and child son. And, the second set of Grandparents ( the programmers wife’s parents ) used to live with them, as they had newly moved in from Ireland, he fished and kept things fixed around the house, and his wife did the gardening. A little bit before Country Living came out they moved into their own small house with a large indoor garden.and got a hunting dog named Britt. Ithey now live in Henford on Bagley with chickens and a soon to be cow. My teen belongs to a group of other teen friends, they visit malls, and teen nightclubs, and she has a lot of them over at the house. They boy child invites friends over a lot as well.
Another favorite family is my family of 4 brothers and sisters, that have now broken up to separate homes. The oldest brother is a level 10 criminal boss now with a jealous wife. The second oldest is his sister who is non committal, and has gone from an artist career to the career where she is a trend setter, switches boy friends often, and lives with others in that party house ( in Windenburg ). His younger sister is a scientist, now living with one of my hot headed artists old roommates, ( a mixologist ) preparing to get married and start a family ( I wish sims could take off family leave till the children start school, I hate for her to actually have to quit her level 10 scientist career ). The youngest brother is a programmer, and has a soon to be wife (s cook) they live in a goid size apartment in San Myshuno, also and are planning to get married ( and start a large family.
Another family has a YA sister ( now a level 10 in the detective career ), with a teenage sister ( whose best friend is the Doctors Grand daughter, and her child brother loves collecting frogs an insects from granite falls, and likes to make scientific potions on his chemistry set. His best friend is the doctors grandson, and they hang out with a group of other children. The detective is now living with a detective she met at work, who has become a teacher…….
And I have many other families in the save too, it’s quite a large save. It’s hard to get bored for too long with such diverse households.
My rotational scenario save has less households so far and I have aging turned off. It’s actually turned off in both saves.