They should use Ohio, it's a bit of a bland state but there is a lot of cool science behind the Beast and how it's still this great after all these years. They may want to consider also asking about the Son of Beast and how that ride failed and if any other wooden coasters over 200ft should be made. They could also use Cedar Point, a lot of its secrets are already out but I'm sure they've got a few more.
As for new topic ideas, they should look at how better themed rides add thrill and how certain rides act to fit a certain theme.
Can't wait for the new show to come out, I love theme park shows that go behind the scenes of parks I can't easily get to.