I'd like a really slow, large elevator containing a restaurant or a bar. Have dinner or get pissed on the way home! Perfect.
The problem, of course, is that instead of the restaurant taking up space on one floor of the building, it would then occupy a restaurant-sized hole in every floor of the building. (Yes, this could be partially offset by stacking several floors of restaurant in this hypothetical elevator shaft, but you're still wasting many multiples of the restaurant's floor area in the building. And floor area in high-rise towers isn't cheap.) We'll leave aside the challenges of providing working utility connections, and the likely-to-be-appalling costs of construction and maintenance.