Do not ever mention that film to the Imagineers.... what you are seeing is less than 3 days worth of planning. The film wasn't designed for the public - it was to sell the state on giving Disney its own rules. Once they actually started looking into it, they realized if you have permeant or even semi-permanent resident, the E, P and T would go away. After all, you can't experiment with people's lives (Imagine getting a bathroom that doesnt work right. Or a trash system like AVAC that turned out to be a dud).
The only reason we ever saw that film was it was the last thing Walt filmed, and someone decided to put it on the TV show. I don't remember which imagineer it was but when asked about the city, he replied "we're all haunted by that f****** painting".