Nobody says, "Let's go to Magic Kingdom to see Hall of Presidents". It's just something you run into along the way. The prior show with Obama was hardly all that political - the only modern politics was Obama speaking and a moment showing Bush speaking after 9/11 in the video montage. A Muppets show is the lazy way out and would completely ruin the theme of the area. The mini-show outside the theatre is a;ready pushing the theme limits for the lands, a full blown show would ruin it.