When I heard that changes were coming to SE, I got very excited! I think that Walt was all about change, about moving forward (see Meet the Robinson's).
When I was 7 and went on the ride for the first time, I thought it was so cool--especially the ending. That's why I was so surprised when I went on it about 10-12 years later. I chuckled to myself because the "futuristic" stuff at the end had already been surpassed by current technology.
I think it's okay to be nostalgic, but at the same time remember that some things need to change with the times and be updated. EPCOT was supposed to be all about "tomorrow" in Walt's vision. It's starting to become about yesterday, and it's not frontierland. Therefore, I am inspired by these new changes, I am optimistic, and I am glad that Disney is choosing to move forward!