Interestingly,
ZeroG over on Thorpe Park Mania has hinted that we should expect a Mack Rides coaster for Thorpe’s next coaster as opposed to the strongly rumoured B&M:
Should we be expecting a Mack coaster instead of a B&M?
I personally feel that a B&M is a little more plausible, as recent developments at both Chessington and numerous Asian Legolands would suggest that Merlin is at very least in cahoots with B&M to a fair extent, and they do have a fair history with B&M, whereas Mack haven’t done much (if anything) for Merlin outside of a couple of clones for Legoland parks.
For what it’s worth, I also heard a rumour that Mack are not especially keen on Merlin as a client based on past projects, and would not be keen to enter into a custom, large-scale project with the company, but take that with a pinch of salt.
However, a Mack certainly shouldn’t be ruled out, and I do think it would still be an exciting ride!
P.S. Here’s the TPM topic:
https://forum.maniahub.com/topic/10923-the-next-big-thing/page/20/#comments