It seems like there has been some disappointing refurbishments but which one was the most disappointing? I do not think Universe of Energy was a disappointment but some people expect Epcot to be the museum or natural history.
I thought they really ruined Spaceship Earth. Before, it had all that beautiful music when you decended and the lights were so cool. The ending now with the screens is ridiculous. Love the Seas with Nemo ride, short as it is and Energy, well we liked the music they had before (Tomorrow's Child) much better. Imagination is fun and we enjoy it but we liked the first version much better. But as far as being the worse ride in Future World I'd vote for Mission Space.
JIYI is the worst refurb of any attraction in Disney history IMO. While I understand the original attraction was plagued with problems, I don't think it called for a complete gutting and redo of the concept. The original concept was a great one but the effects were long outdated which is why the attraction was not very popular in its later years.
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