At the very end of the Imagination panel, they presented a virtual ride-through of Imagination 1.0. Afterwards, there were people all around me who were wiping tears from their eyes. You could hear people sniffling and blowing their nose throughout the audience. Somehow I doubt that 30 years from now, people will have the same reaction to a video of Eric Idle.
(Also worth giving a brief mention, at one of Marty Sklar's talks on Oct. 1, he said that the only reason Imagination 1.0 was replaced was because Kodak wanted the pavilion to be updated, and that he doesn't think there's anyone who wouldn't say that it's unfortunate that Imagination 1.0 was not retained.)
The next day, Epcot's 30th, the line to get into Mouse Gear, which had the exclusive Epcot 30 merchandise, was literally 2 to 4 hours for most of the day. Shortly after park opening, the line stretched back to the Leave A Legacy plaza in front of SSE. After the CMs re-routed the line, it stretched back to the World Showcase promenade. The Epcot 30 vinylmations - featuring Figment - sold out within 10 minutes of park opening. The Epcot 30 pins - featuring Figment - were a restricted, limited sale (sound familiar?) of two per person. The Epcot 30 t-shirt that featured Figment sold completely out of stock in three days, which meant that it was gone even before Epcot's 30th anniversary, as it went on sale on Friday the 28th. When was the last time Duffy could compete with that level of demand/sales?
Finally, your assessment of Imagination 3.0 is totally off base. First off, it's worth remembering that the only reason we have Imagination 3.0 is because people screamed bloody murder when Figment was removed in Imagination 2.0. (And that wasn't just the hardcore fans - if Disney really cared about what the hardcore fans think, we'd have an updated Horizons instead of Mission: SPACE, and you'd still be able to see 20K from your spot in line at Mr. Toad's Wild Ride in the MK.) But second, you can't judge attraction popularity/attendance simply by comparing wait times because different attraction capacities can and do vary wildly. Case in point - Spaceship Earth has carried the distinction of "most popular attraction in the world" (in terms of ridership) for most of its existence, but rarely has long waits (except for the morning) because it is such an efficient "people eater," similar to other omnimover attractions like HM. Aside from the fact that I've never, ever seen a line at Imagination 3.0 that even approaches the lines that SSE gets in the morning, Imagination is a much less efficient attraction than SSE, so even if they had the same wait time, that would indicate that many more people were riding SSE than Imagination.