They don't because they aren't. They claim nostalgia, but they only care about an imaginary audience of those who like things completely changed and altered to an annoying degree and kids who want to see movies about characters they've never heard of. Not this time, though. Like I said before, they were annoyed by all the Muppet movies we were annoyed by. It's not the same situation that films like Green Hornet (like anyone under the age of 50 knows who the Green Hornet is) or Smurfs (made specifically for kids with ADHD) where they just buy a license and then scribble out a generic script. Kids of the 80's were the LAST people they had in mind when making the Inspector Gadget movie. Anyone could have written a "who cares" sloppy script for a Muppet movie. This wasn't the case.