I just reread this thread. I could see a rehab of Flooded Mine but with 3d effects. Same could be done with a New Diving Bell with 3d effects.
I am with you on a new Diving Bell using new technology! Although the Flooded Mine could use a spruce up, I love its current classic feel.
The whole splash harbor needs redone.
Well, you are in luck since they removed Splash Harbor several years ago. Yes, yes I know you are referring to Geyser Gulch, and I agree that it could use a touch up.
Why didn't they move the ferris wheel to Grand Expo from Celebration City.
They would have to completely re-theme the Ferris Wheel, and find a big enough footprint in the Grand Exposition to put it.
I like your creative thinking, keep it up.