If FP+ is gone forever, this is what I could see Disney doing when business starts getting back to normal crowd wise...…...
Disney offering more days of EMH at the parks for onsite resort guests to justify what they charge for rooms. Then using Genie as an attraction planner when you arrive in the park based on what is going on in the park at any specific time that day. It will make suggestions based on the preferences you enter for your party and on what it learns about you while you our at the park. Then Genie will offer you the ability to purchase the right to jump to the front of the line of one attraction you choose for an extra fee. That fee will be based on the current wait time for that attraction. So if you want to jump to the front of a two hour wait for FOP, that will be $50 per member of your party. If they aren't getting any takers at $50 the system can be programmed to drop the price to $40. If you want jump to the front of the line of another attraction or that one again, you pay another fee. Maybe, they offer some kind of discount for onsite that varies based on what level of resort you are at. Maybe the offer one free use to resort guests on any ride that is not one of the top two in demand attractions at the time you decide to use it.
Disney can program the system to figure out what you are willing to pay and then price the upcharges on an individual basis. Why only charge $40 per person to the family that is clearly willing to pay $60 per person to avoid a two hour line? Everyone will be seeing different prices on their phone based not only on current demand but based on what Disney has learned it can charge you individually.