Nobody's mentioned this yet, but the back of the booklet has an interview with Mr. Johnson. I think it's great that his name was mentioned there. I was wondering if Sesame Workshop was aware that his name is Mr. Johnson. It was only mentioned in one skit, and it seems like Sesame Workshop usually calls him Fat Blue. Sesame Street Unpaved only refers to him as "Fat Blue", with no facts about his real name. And he has been referred to by different names. One skit with Grover as an elevador operador refers to him as Mr. Jenkins. Big Bird called him Mr. Blue in A Celebration of Me, Grover. And some official sources call him "Customer". The Muppet Wiki talk page for Grundgetta has scans from some official character listing that Sesame Workshop used, which has him listed as "Grover's Resturaunt Customer".
I've noticed that both sets include three Kermit segments that have previously been released on video, both with one sketch that is in one of the episodes. This set also seems to have more Kermit sketch. Counting multi-part sketches, the first set included 10 Kermit sketches (11, if you count the pitch reel), and this one includes 11 (12, if you count the brief clip of Kermit on a TV set in one film, which is shown in two episodes). If the next two sets have the next five season premiers, there wil be at least two Kermit sketches. Hopefully, more Kermit skits wil be included as bonus features (and hopefully some were edited by Noggin, though if that's the case than "Shame on you, Noggin!").