The world's most expensive moving theater! Like at this point just bring back Action Theater, with enough motion in the seats and wind effects, I'd imagine it could be a very similar experience for a fraction of the cost WITHOUT overriding a current coaster experience.
If there is a VR experience in KI, I'd love to see a VOID like setup. I think that would do numbers as an additional upcharge, where you can get tickets and reserve a time for your 30-minute (or more!) adventure through a VR space with tangible elements. For bonus points, the grey-pad rooms that you walk through IRL can be modular, and there can be a new VR theme thrown over it every year to keep guests coming back for a new experience on a smaller budget for the park.