What Went Wrong...
Personally, I've been disappointed by Sesame Street, increasingly for each of the recent "revamps".
It's understandable that the show lost the free-flowing, experimental feel of its early years, where they were willing to try out new things and break new ground. Now they're a big, important franchise that has to test everything to death with focus groups, creating an ensured segment success but a lowest common denominator feel. Fortunately, I recorded a great many of the Sesame Street Unpaved episodes, which my kids much prefer to the modern version.
But what I find less forgivable is the way the current format has become so ritualized. I'm aware that "repetition" became the trendy edutainment keyword a few years ago, but I think Sesame Street has misinterpreted what that means for them.
Back in 1969, when I first watched Sesame Street as a two year old, they had the right kind of repetition; There was a letter and number of the day, and they kept doing completely different things centered on those. You were therefore faced with varying aspects of the information in question, giving you a richer understanding of it, and it was more inevitable that some segment was the one which hit upon your own learning strengths.
But now, encouraged by the success of Elmo's World I suppose, shows like Dora and Blue's Clues developed systems of ritualistic presentation, where exactly the same thing happened exactly the same way each episode, with only the subject matter changing.
But, ironically, right when those two shows departed somewhat from this format, breaking up their rituals and diversifying what happens even on the repeating segments of their shows, Sesame Street cloned the ritualization of Elmo's World, spreading it through the entire show. Journey to Ernie, the Number of the Day segment with Count von Count, et cetera...it became like a Catholic mass. Except less interesting for my kids, who (despite the younger two being in the target age range) mostly wander out of the room during the rituals.
And I'm glad the rituals bore them, really. Obviously that kind of really strict repetition is going to have the most reliable learning effect per isolated segment, in focus groups where the kids are stuck in a room with the show...but it's just not the healthy way for individual kids to learn. A child can easily be trained into too rigid a routine structure, becoming a junior version of Monk (albeit hopefully saner) .
Strict routinization may be interpreted by pop psychology as "reassuring" for children, but it's also a crutch, a dependency leaving the child's adaptability and independence atrophied.
Presenting a very diverse range of approaches to the idea being taught will not have the same lowest-common-denominator results per isolated segment, but will still have a better outcome overall, as each child can find segments even more specifically customized for himself, as well as being exposed to broader experience overall.
I hope that, in this new series, there's a move (as other shows have done) away from the rituals, and back to diverse approaches intra-show, if not the experimentation which was what "made" the show when it first came out.