First I'd like an Open For Business expansion, then for EA to add Therapist as a career choice. With the new emotions in the game, I think it would make for a fun career choice. What ideas for New careers do you have?
How about a professional dancer, I would love to see some more dancing animations! Not to mention having a "visible" skill bars for it.
It could also break off into choreographer as well. Sims could also choose the main genre they like to dance to; i.e. jazz, hip hop, indie, ect. Dance styles should match the genre too!