First, you found 110 minute wait reasonable or did I misunderstand that?
Second, I don't know what the answer is. I'm a psychologist, not an economist, so I can only tell you likely how people think or act, not a good business solution to Disney's attendance woes. However, using what knowledge I have about the psychology behind how people spend I can say this:
People always spend with emotion. ALWAYS. Even if you have indifference, it's still an emotion. People still know what it feels like to have money tight. They haven't forgotten so they analyze what they're spending, where they're spending, and what they're getting. They run a few different scenarios. People's choice to go to Disney is usually based on emotion, not value and Disney banks on that. every. time.
Unfortunately, I agree with what Disney did, I just disagree with their timing of it. Disney should not have rolled out this pricing model at this time. They should have saved it for when there was actually something to see at their parks. Right now, with so much construction, they really needed to let Disney continue being a good value. I don't feel their attendance decline is solely because of the new pricing structure. I feel it has a lot to do with how people feel and right now, especially the local fan base, people don't feel Disney is as appealing and they're going elsewhere.
I feel that once the major projects are complete Disney's pricing model will make sense and will stabilize the attendance through out the year. People who can ONLY travel at Christmas for example are either going to pony up the cash to satisfy their emotions or they are going to evaluate if they have a stronger emotion to the value of their dollar vs nostalgia. What the general public has shown Disney is that they're willing to pay, but they are starting to set limits on what they're willing to pay for; the after hours MK event being one that the public rebuked. Until the major projects are complete, I believe there will be a steady decline to attendance and frankly, Disney can't handle the demand and therefore, must limit the supply by raising prices. However, in the future, instead of having 60 minute lines at 4 attractions, there will be 30 minute lines at 8 attractions. They'll create customer satisfaction by dispersing crowds, providing more experiences with acceptable wait times, and continue to explore the options with in place infrastructure, i.e., magic bands.