Definitely go with quality themed attractions at highly themed parks such as Disney, Universal, Busch Gardens, Dollywood, etc Theming can be expensive so I think rides that immerse the guests are how those parks should go. For Cedar Fair and Six Flags parks, I'd say they should add more theming to their newer additions but still go quantity. Some of the newer Cedar Fair coasters such as Mystic Timbers, Copperhead Strike , and the two RMCs have theming even if it's not at the level of Disney but it's better than having a generic ride with a random name slapped to it (looking at Hersheypark especially).