I think it would be cool if EA came out with a music career pack, like a game pack, not an expansion. I feel like the sims 4 needs more instruments, like some brass instruments and some woodwinds, and more string instruments like the cello, bass, and viola. I also think it should come with a drum set, that would be really cool. Even thou singing in this game is pretty expansive, it would be nice if they would expand that more, maybe have a popstar career. It'd be cool if they could build that pack off of the get famous expansion.
I also think it would be cool if they came out with a car stuff pack, It'd be cool to have some nice looking cars in this game, and most especially some nice garages for building.