I don't have ideas but I want to add that if the team ever does anything with dineout I hope they don't speed up the restaurant wait time.
Restaurants are meant to be an "experience" and I love that my sims get to experience that. They get to know each other, draw, watch other sims, or do other things I add to the Restaurant as they wait for the food. One of my sims made his proposal to his date before the food came so they even got some romantic time.
I mention this because people always include speeding up wait times as things they want "fixed" in an update or refresh but It's working as intended. They already cut the eating and drinking bites by 90% at players request and sims speed eat their food which I hate hate hate.
I use to have my sim make coffee and relax in the tub as they drink it. Now they drink it two sips and it's gone before they even relax.
Hiring family would definitely be fun. But I would love for sims to do all the active careers with friends and family.