The nostalgic part of me really doesn't care for this change, but the realistic part of me is kind of relieved they are actually doing something with the building. I used to fall on the side of the original concept of a "world's fair" theme in the park which represented advances in technology and such, but this park is really a banner example of why that is just not going to work in the 2017 United States. The last worlds fair hosted in this country was in 1984 in St. Louis, and was a financial disaster (which was actually quite common including the mythical 64' Expo in NY). To build a permanent park in this model was folly when it was done, but given it was tied to the Disney company it worked (although even though I loved it, I remember this park was not really the most popular place in the world). I'll miss the original concept of the ride and the park as a whole, but I suspect not long after all of this is completed and changed over much of the frustration over it will go away. This is not the first time the company has learned that people do not go on vacation to be educated (Disney Institute)