Nostalgia by definition does not keep people coming back and back and back again. The whole reason the affection is there is because of the LOSS of availability to it. If you can get it whenever you want - the extraordinary attraction fades.
The 'bring back the...' crowd always overlook this. It's why things work great as an exhibit, or a limited availability thing - and not as simply restoring the original and expecting it to be popular forever. ATIS in it's original form would be a complete joke today.
Sure, people may be nostalgic about the house they grew up in, or the town, or their first girlfriend, etc. They love to go back, and see them again, to relive their memories of the past. However, that does not mean they want to move back, live there again, dump their wife and marry their first girlfriend who is now ugly and old.
Same with EO - people want to experience again what is no longer available - but that urge will wear off quickly and then it's purely up to the attraction itself to maintain the crowd draw. And in that case - this attraction is dated and out of it's league today.
How many Captain EO threads do we need anyways? They all cover the same exact thing.