While I love to see new attractions, I also believe that there are certain attractions at each park that should be preserved - Jungle Cruise would be one of those at MK and Muppet 3D would be one at DHS. Update the annimatronics and the 4D effects, but the integrety of the original attraction should remain in tact. My kids were 8, 10, and 12 when we all had our first Disney experince: Disneyland in Feb. '99 and then WDW in June '99. And, while we all LOVE WDW, there is something very special about Disneyland because it was the first. My 8 yr. old would say in amazement, "Walt was really here!" Of course Jungle Cruise is cheezy - that's part of it's charm! I agree that the animatronics need to be updated, but there's a very historical feeling when you're riding in the boats at Disneyland and you think that those animatronics paved the way for the amazing life-like things that are being built today. I loved the new Muppet Movie, but II kind of see the Muppet 3D movie as kind of a salute to Jim Hensen, as it was one of his final projects.
History and nostaligia are just as important as progress. It provides a frame of reference. And, who among us doesn't look forward to riding some of those same cheezy rides over and over again, remembering how exciting it was riding it as a child, and seeing that same excitement in the face of your children and grandchildren? My 2 cents worth!