I wish Disney followed the same business model as Six Flags and Universal where you can choose to purchase an express pass that would allow a single one time use at each ride, or an unlimited pass for more money. This may help curb the FP+ system where rides that people might want to go on are capped and they end up having to wait in a 2+ hr line.
I also wish that Disney would adopt a single rider line for ALL Of their rides, and not just on Everest (are there more single rider rides in WDW?), and like
Xtortion mentioned above adapt a virtual queue system that will allow you to just walk to a ride, select a ride time, and then come back when its your turn, and not have to pay any additional fees to use it.
The other issue is that Disney has already spent well over a billion dollars on the FP+ system in Florida and so I doubt they are going to abandon it anytime soon.
My personal issue with FP+ is that you can still only select 3 rides per day and they all have to be in the same park. I wish that you could select 3 or more rides per day for different parks. If you have a hopper ticket the FP+ system locks you into that park for the day if you have ride resversations there, which screws you out of hopping from park to park to park.