In all honesty that is a tough task. Crowds are insane even with extreme prices. They cant lower prices because its already packed. They could raise prices to an insane level to help alleviate the huge crowds but then that takes $$ out of their pockets from merch and food etc and alienates a ton of people.
The only thing that really makes sense to me is to hire a lot more cast members, have a lot of non ride entertainment to suck in crowds to help with dealing with ride lines. There are spaces that they can do that with if they can come up with ideas that would draw people in, especially in Tomorrow Land.
I still think they should make
Disneyland and CA one big park. No park hoppers. Move the security lines and entrance lines to the park so when you enter the esplanade you are in the park. You can choose to go to Disneyland or CA but once you are in the esplanade you are in the park. Even the Esplanade has a ton of usable space