I love the idea of an elders stuff pack. I also really think a hobby pack would be really cool, and introduce things for all the ages. In my dream world we would get a pack that kind of introduced new things for each age range.
Kids- Bug collecting, or building clubs. Fake sick to stay home from school, picky eaters?
Teenagers- movie theaters to hang out in, comic book shops/arcades, better clothes that fit that age, an option to hang out with friends after school..ect..
Young Adults- a club like "mommy and me" a lot of sims I play start having young kids as young adults- so they get a way to hang out with other parents, while their kids hang out with each other.
Adults- Happy hours after work, less rabbit hole careers, more investment opportunities outside of the business career. A stock market or something that can be invested in regardless of career route? A mid-life crisis option would be a fun game play option as well. Especially if you have any high strung stressed out sims.
Elders- New clothing options, new hobbies (knitting, canning, bingo..expanded baking options, ect..)