I can understand why Disney would remove the request feature if people who don't them fulfilled end up getting upset. The front desk should not need to deal with people getting upset over such a small thing - That's a first world problem.
However the request feature could serve as an option for Disney to learn what people prefer as location when they checkin. If the majority, request upper floor or near elevator, just like Boardwalk view before BWV was split into the current booking categories, then maybe that could justify creating a new booking category to ensure that specific location. With a separate category you are in fact paying to ensure that location.