Its an ever changing industry so im sure in time we will see some wild way out there rides. Take a look back at the evolution of these rides over the past 90 years and we went from 45ft high figure 8's to well over 400ft coasters. Just over the last 20 years the indusatry has advanced dramatically. Some of the best rides are no always the tallest.
Believe it or not a theme park is an experience. Most people(not enthusiast) go for an overall experience. We call these people(guest) the general public and thats who a park wants to attract. I dont think they would ever eliminate the experience of a "family friendly" theme park.
I could see ttd or kk as inverts in the future. Its an outrageous idea but i could see it. 5 years ago, everyone thought it would be years and years before we topped mf. And it really didnt take long to break that 400 ft level.
...according to details, they will be refraining from a tacky "carnival" look to the rides, so they will be more sophicated to bring in the tourists & guests to visit the park & want to ride them, so I'm sure whatever manufactures they choose, the rides will be a lot more original than those found at your every-day typical amusement park. ...it may not be biggest, but they probably will be aiming for quality. The coasters would most likely (just assuming) be original layouts custom fit for the park that could very well be a lot more exciting than any "tallest/fastest" rides out there.
Just wait until Ravine Flyer II at Waldameer... we'll see who really thinks "tallest/fastest" will dominate record books (ie: Great Adventure's new wooden).