The problem of using the park reservation system with separate availability buckets to add days where passholders could not enter the parks (while still selling spots to ticket/on-site guests) also impacted lower tiered annual passes — not just the “no blockout” pass level. It was/is also a problem at both
Disneyland in California and at Disney World in Florida. It is a legal problem for all annual pass tier levels for both locations.
So, just eliminating the no blockout highest tier will not solve their legal problem. Switching the APs to weekday only will not serve people who work or have kids in school. It would throw a wrench in travel planning for those whose trip involves weekends.
Chapek said something about managing attendance as a method so they did not have to raise prices. The tool they invented to manage attendance was the park reservation and separate bucket system. So, Disney prefers not to drastically raise prices on their strongest fan base.
They have some real problems to deal with in redesigning their AP programs. I really do not know what they will do. I hear they are doing some deep dive surveys and interviews with current AP holders to see what their needs really are.