I wish we had part-time jobs for adults, too. Not just teens. It's good for storytelling.
Also, I would love military. A lot of my family has served and I have to make them astronauts in the game because that's the closest thing they have to Air Force.
I really want celebrities. I think the social media career was cool, but they could have done better with it. It would be nice if they did a celebrity game pack and added to this career. Such as them going out and getting recognized, discounts, autographs, and pictures taken if their social media profile gets big enough. Also an idea, fans having infatuations with your famous sim. It would be funny.
-I hope they give us a diverse range of celebrities, too. Like model, director, actor, singer (country, pop, folk, etc.), bands w/ lead singers, and maybe letting sims of the author branch get recognition, too.
All of these ideas listed above I think would be awesome. Would like therapist especially. Your sim could counsel other's - possibly help married couples n' such.