Wont happen, Disney's objective is not to buld a park around a specific type of attraction, but a specific story or theme. Building a park around coasters, similar to Six Flags or Cedar Fair leds to a uninspired atmosphere. As much as I love the coasters at Six Flags, I don't like the parks. Same with Cedar Fair, they may have great coasters, but their parks lack emersive storylines and are overall boring. Why would you want a park that people only visit for the coasters and not the park.
Also, by building a park only with thrill rides you reduce thrillseeker demographic at the other parks. Disney's formula is to have "something for everyone" (as speck puts it) at all of their parks instead of just devoting a park to one demographic.
To further expand on the point, if you build park that only consumes one demo not only do you reduce the likelyhood they will visit the other parks, but also the length of the guests stay. What disney also tries to do is get you to visit every park and stay longer. If you have one park that is all thrillrides, most thrillseeker will only visit that one park and only need one day to do it. By putting thrill rides in every park evenly with other types of rides, you force guest to visit every park spend admission on each park, more evenly distributed, and most important they must stay longer in order to visit every park. By meeting the those three key objectives, Disney makes mucho el dollaros
