When a business says we are changing this because it is not working they do not mean guests were unhappy with it, quite the contrary most people loved FP+ and want it back as it was. Ask anyone in the park in a 75 minute line today if they want 3 free FP handed to them, they are not saying no.
When Bob Chapek says Fp+ wasn't working, what he meant was it wasn't working from a money making standpoint for a business. There is no system that can shorten the standby lines once capacity hits a certain number, it is civil engineering. Lines, even if they go to a paid FP will still be long when that number is hit.
People thinking they are changing FP to make lines shorter have no clue. This can only work three ways.
1)No FP, lines are long
2) Free FP, lines are long, but we get the relief of 3 free FP
3) Paid FP or DPA etc, the lines are long but now only the people with upwards of 400 dollars more per day to get the relief of any Fp.
For me this is fact. The only way to beat it is go in the low season.