An Education career would go well with a GP that addresses improvements in schooling for kids/teens. I'd like to see homeschool added, or some sort of CL-style "study from home". Kids/teens with good grades might only have to attend school 3-4 days a week, and/or get out earlier. That would give more incentive to get grades up.
I'd like to have a Self-Employed option; currently if your Sim is without a job (basically freelance), if you rotate to another family then that Sim is eligible for the game to put into one of the NPC jobs like Mixologist or Food Stalls or Restaurants. A Self-Employed option could cover those situations, especially for restaurant or retail store operators, or just making money doing freelance programming or as an amateur archaeologist.