I agree "The King" was excellent and conceivably more "re-ridable" for a larger audience than a spinner for the reasons stated above. As I get older, I understand the whole centripetal force, getting dizzy more easily syndrome that happens. While I still ride coasters that spin, I find them less enjoyable than I once did because they bring with it some minor mental pain.The King was excellent in this regard.
There's only one way to find out for sure (and I'm certainly hoping for the best!), but I'd be lying if I said I wasn't at least somewhat worried about my personal capacity for re-riding a Spinner.
If the cedar fair execs have their way, I would tend toward the new coaster not being a prototype spinner because they'd be taking on a lot risks. While the Mack spinner model has a proven track record of success the magnitude, height, shuttle aspect are all unchartered territory for that model. I would think they would go with a ride with a proven track record like a Mack, however make more manageable improvements to an already great ride model.
In short I'd say, can the ride be a Mack spinner? I'd say absolutely yes. I would just posit that it may be smaller than 400 feet (But still tall enough to make a statement) and not as fast as ka, while breaking other records in track length, number of launches etc. for that ride type.