LOL Jim. BTW, excellent Essential Listening list. The new AIR is awesome. You should check out the new CD [and the 2001 debut] by Zero 7 -- if you haven't already. I'll have to check out Adult and Client....
The key word here is "revolutionize." Not only do we not agree on what that means, but it probably is not necessary or even useful in a research paper. You need to be tracing the evolution step by step, not huge leap by huge leap.
Looking at little steps...
l. Kennywood introduced the idea of the terrain coaster (although no one at KW ever used that term) with its early woodies.
2. KW's Racers were the first twinc coasters to run on a single track (i.e., the train leaves on the right track and returns on the left, then returns next time on its original right. It's not two parallel tracks, but one double long single track coming into the station halfway through).
3. Waldameer's Ravine Flyer was the first coaster to cross a major state highway.
4. KW introduced the drop out of the station with the chain lift partway through the ride with its Jackrabbit and Pippin.
5. Carowinds Hurler and Kentucky Kingdom's Thunder Run were the first (they're mirror clones) woodies to have the entire layout behind the lift hill and first drop.
6. KW's Jackrabbit was the first double dip coaster, both to demonstrate the effectiveness of and to take advantage of the upstops.
I have a postcard from West View Park showing a terrain coaster predating the Kenny-woodies that would refute Item #1. And I'm pretty sure that, with a little research, I could debunk the rest of your points as well.
Some of the rides I would consider revolutionary. You can do your own research on them and find out why for yourself and in turn decide for yourself if they are revolutionary.
Leap The Dips - currently oldest operating rollercoaster known, and possibly last operating side friction coaster. In and of itself this ride was not revolutionary but might be a great example of a ride type that was revolutionary when it was introduced.
Matterhorn at Disneyland
Revolution at Magic Mountain
Corkscrew (no longer at this park) at Knott's Berry Farm
Like I said in my previous post, I will leave it to everyone else to research them and decide for themselves if they really are revolutionary and why.
Z Force was previously stated at the first to have been designed using spline curves.
Stealth was the first successful "looping" flying coaster and it allowed for the current wave of flying coasters in existence. Sure it may not have been a true first but it did in some ways revolutionize the technology.
Volcano - it was the first inverted LIM launched coaster. For some reason I thought that there was more to the story than I can find now that would support why I thought it was revolutionary.