Perhaps we're missing the nostalgia of progress. This may sound contradictory but if we're going by Walt's original vision for the park, he included progress beyond his time.
"Whenever I go on a ride, I'm always thinking of what's wrong with the thing and how it can be improved."
"Disneyland will never be completed. It will continue to grow as long as there is imagination left in the world."
Even in Walt's time there were attractions that were closed down.
1955– 1956 Tomorrowland Boats 1955– 1956 Mickey Mouse Club Circus 1955– 1956 Stage Coach / Rainbow Mountain Stage Coaches 1955– 1960 Space Station X 1 renamed Satellite View of America in 1958 1955– 1960 Conestoga Wagons 1955– 1962 Main Street Shooting Gallery 1955– 1966 Clock of the World (Tomorrowland) 1955– 1966 Monsanto Hall of Chemistry 1955–1960 1956– 1958 Junior Autopia 1956– 1963 Mineral Hall 1957– 1966 Midget Autopia 1961– 1966 Flying Saucers