Speaking of which, I point you all to the thread on the 5th Gate possibility. It has the data you crave. To wit:
1. MK is full. Go away. Stop adding stuff that increases attendance. Open up more 'space' instead.
2. The other three parks are not doing their job. They're not near capacity. They have the ability to soak up extra bodies. So, all the new stuff should go in them. All three of them also need to become 'two day parks'.
3. Capital expenditures right now are at peak compared to revenue. Yes, it's hardly enough to make up for years of no re-investment, but it's hard to imagine them spending even more than they are for the next several years, especially since they're doing major expansions in all the parks globally.
Start here in that 5th Gate Thread for the stats:
https://forums.wdwmagic.com/threads...theme-park-by-2025.893463/page-4#post-8269130
Other things to consider:
All of WDW has 3 million per year more guests now than 10 years ago. Once a park's capacity has hit the tipping point (MK), then queues suddenly explode as the lines back up with more and more people each hour. People will blame FP, a system for spreading people around... which would mean pushing people away from 'full' rides theoretically alleviating overlong lines... rather than blame an extra 3 million people. Go figure.