The only thing that's going to keep some form of fastpasses right now is that all the rides have two queues. Disney is using this time to reset/redo everything with COVID as an excuse to change things.
Coming out on the other side, we'll see probably more things like virtual queues and pay-for fastpasses. Who's ready for on demand fastpasses where cost is scaled by demand?
- People are going to get used to the park reservation system.
- People coming back to the parks in a year from now are going to be used to it being part of the lexicon.
- Disney is going to get used to the power of dispersing crowds across multiple parks.
I can easily see Disney keeping park reservations in some form, so they can control crowds at each park. Disney knows that park crowds is a negative, this will be a tool they will use. Disney already trained us to book ADR/Fastpasses 60-180 days before the trip. You will now have to get used doing that for parks instead of FPs.
Hoppers will come back, but probably after a certain time of day.
APs will see a higher spike in cost, closer to 2000$ if I had to wildly guess, and will allow you to skip reservations and park hopping restrictions.
I'm just a random guy thinking up things like this. You know something like this is being discussed somewhere between people who think of these things for a living.