A concur that a gondola ride would be cool. A perfect example would be the iteration in the Venetian Hotel in Las Vegas, inside or out in that case depending on the temperature (I'm not suggesting we would have an indoor/outdoor separation in EPCOT, just saying.) A gondola ride ride in the dark could just be what the doctor ordered. Doesn't have to be overwhelming.
I'd say of more urgency would be the fabled roller coaster at the Tokyo pavilion, rumoured to be a MAJOR attraction on the scale of the Matterhorn! It was just never constructed as the sponsor pulled put. I believe I'm right in saying that.
[ETA] - The coaster was in fact intended for Japan’s Mount Fuji. Sorry! There's also a dark ride that was partially built for the Germany pavilion but was never constructed - you can still see entrance, just boarded over.