The problem is, everything else on children's TV is like that now anyway. Like I always say, Sesame Street doesn't intentionally "dumb" itself down, rather there's a black hole created by Nick Jr. and Disney Jr. shows that drags the rest of children's television down with it. I hate the fact they have an adapt or die attitude, but that's why the show's been on longer than anything else made for children. The only other thing I can think of that lasted nearly as long is Scooby-Doo (even though it hasn't exactly been in production as constantly as Sesame is) and that changed formats multiple times as well, but always manages to go back to the original format. And despite what everyone says, Scrappy-Doo actually saved the show's sagging ratings. That's right! Scooby wouldn't have lasted as long as it did without everyone's least favorite character. I can't think of a better parallel... the block format that we don't like brought the ratings back up and most of them were the older demographic that Sesame Street lost in the 00's. And you have to look at it this way, before they decided on the block format, the show was almost reverting back to its original form, or close enough to it. Season 39 shook off most of the changes brought about in 2002. They even had the cast members announce the letters and number of the day, often fitting into the main story's plot. Too bad that didn't last, but I doubt that's the last we'll see of it. No change on Sesame Street has been permanent. If they can get rid of Elmo's World, there's hope yet.