Time for me to play Imagineer!
1. Trim each scene to 3-4 minutes so people with short attention spans aren't trying to leave halfway through.
2. Make it more relevant to today's audiences by making the 1964 World's Fair finale scene the first act, followed by new scenes for the 1980s, 2000s, and the new finale would be the 2020s. With the original finale now the intro, this would tie the new version back to the Walt original.
3. Eliminate the "immortal family" issue by showcasing four different families in the different scenes. The first scene could be the original family, and the following scenes could be families from other cultures to make the attraction more diverse.
Basically instead of displaying how electricity improved society from 1900-1960, the show could display how modern technology such as computers have improved life from the 60s to today.