I do enjoy Ellen's Energy Adventure as a guilty pleasure. I love Ellen, Bill Nye, and Jeopardy so they make the ride fun for me. Yeah the information was dated after not having an update since 1996, but the themes presented are still extremely relevant in 2017. One of my regrets is that I'm too young to have experienced the original UoE show. Both the Kinetic Mosaic in the pre-show and the mirrored theater walls for the finale seemed like absolutely incredible effects. On that note, I greatly appreciate the lengths Martin went to in his new Energy tribute to give the viewer a feeling of what they were like in person. I'm just upset that the only UoE I knew (first time I rode was 2013) was one that was dilapidated and falling apart after years of neglected maintenance. Heck, I've heard that the middle theater cars aren't even operating anymore as of last month.
For me the biggest loss overall is that of the traveling theater ride system. I don't mind the long length of the show at all, in fact I think it allowed for a more compelling attraction. Just the way the turntables, the show doors (despite door A being broken for the last year), and the theater cars themselves work is all incredibly awe-inspiring to me. It's unlikely Disney would ever build another traveling theater ride, so we will be losing a really fascinating way to experience an attraction after August 13th.
Long live the Universe of Energy!