Now that I've read everyone's responses, I have to say that I agree with most of the points made. I do think Kings Island could become more of a theme park with thrills as it currently exists, even if its clientele doesn't change. My definition of a thrilling theme park probably does not translate well into my posts: there's a reason why I used to keep my writings short before I joined KIC . I'd really enjoy if the park focused more on the theming of each area and the quality of both attractions and sightlines. Think more of how the park was from 1972-1992 rather than it being a park like Dollywood or Silver Dollar City. I'd love for it to become more like Dollywood in terms of theming and vibes, but I can see how that may be incompatible with the park in some ways.
Good, comprehensive theming is what I think would improve Kings Island and elevate it to the next level as a truly regional park. Some theming elements don't require much upkeep from year to year, such as area entrance signs, stationary props, and ride theming. More buildings (facades, even), trees and water would greatly help Rivertown just as a return to the festival atmosphere would make Oktoberfest feel like a real land again.
Thanks to everyone for your opinions!
Rajun Cajun (in Action Zone) or the SteamWhirler (in the Saltwater Circus plot or along Coney Mall) would be my picks for moving. The odds aren't terribly high IMO, but Carowinds just got their own NebulaZ in Aeronautica Landing so I think KI could handle it.