I would definitely like to see a shop that does tattoos and piercings. An amusement park and more items for a childrens park and their gardens i.e seesaws and slidies..
Less rabbit holes for sure, especially less rabbit hole careers and hobbies. Scuba diving is no fun unless you can go under the sea with the sim and look around like in sims 3.
I'd like to see a hotel career, maybe the sim could start off at the bottom as a cleaner and work up to the owner but we would interact in the career and it would not be a rabbit hole.