I'm so glad that this is finally brought to light! THIS was the the secret preview I got to see in December! My son and I were walking around EPCOT and outside of the Innoventions, they asked us if we had some time to spend on this. They took us into the employee part of Innoventions, and we went through some cubicles and up the elevator to a conference room. There were 10 of us participating.
We saw a simulation of the storm and the damage from it. Then we had a quiz type thing about what roof type is better, what type of nails to use, etc.
They asked us a bunch of questions about what we liked, didn't like, would change, etc. My son was especially thrilled because he was the only kid and the Imagineers were really interested in what he had to say!
They really didn't tell us how they were going to make this exhibit "magic", but we had all suggested interactive wind, rain, etc where the audience was really part of the storm. The Imagineer smiled when we said this.
It was interesting to see this part of the Epcot. I mean, how many people get to go backstage like that?