I'm sort of in the opposite camp. Although I enjoy the Muppets I don really care about them. I think that this has potential to be really good. The Muppets are so often featured as characters in established stories/narratives (Pirates, Space, Christmas Carol, even the first few movies have very classic themes) that I think it could be a really funny, entertaining show. It will tell stories of American history, which is in line with the mission of Liberty Square. I don't think it will be some garish, Muppet-y facade - I'm sure the exterior will match the surrounding area. It could be a nice counter-balance to Hall of Presidents, and it's always nice to add a new show the whole family can do - I could see this appealing to everyone from little kids to senior citizens. As long as it's executed well, I think this is a good idea.
@rteetz do you know what building this is going into?