Not exactly sure whether this is the thread for what I'm going to bring up, but here goes.
I wonder if the Muppet segments were supposed to be repeated. I know that primarily the animated segments, particularly letter and number segments, were made with the intention of being shown in multiple episodes, like commercials. And in the first season, when each episode of the week was sponsored by the same letters and numbers, they'd at least repeat many of the film/animation segments throughout the week, but the Muppet segments didn't get that treatment (it was rare for the same Muppet segment to be shown twice in one episode, but I think I've found some examples on the wiki).
But recently, I was looking through Muppet Wiki's guides for the first few weeks, and it seems like it took a while before any Muppet inserts were repeated. Can't remember how long (maybe three or four weeks) or what the first Muppet insert was to be repeated in a later episode (of course I'm not counting the three crocodiles in Baker #3 or five monsters in Baker #5).
I'm sure Muppet inserts were always meant to be repeated, but now if I saw official word to the contrary I would not be surprised. Aside from it taking a bit of time before any Muppet segments were repeated (which, while I can't remember how long it took, wasn't really that long), the first season had a lot of Muppet inserts that ended with them introducing the next segment or began with them talking about (sometimes watching the end of) the previous segment, and the first season had a lot of multi-part segments (and with many cases where they introduced specific cartoons before the next part, making it a bit complicated to repeat a lot). I think a lot of the really long multi-part segments (especially ones that took four or five parts) were introduced in the first weeks of the show.
Of course I wonder if street scenes and segments with human cast members were intended on being repeated. I'm certain street scenes with celebrity guests (like James Earl Jones) were, but there are a lot of street scenes that weren't repeated (and a lot of them didn't tie in with a plot, so there's not really a reason not to), though with looking at many Muppet Wiki guides, it looks like there were a lot of cast segments that don't take place on the street that weren't repeated, like the many renditions of "One of These Things". And while they did take place on the street, the first season has a lot of scenes where the adults read an existing children's book, which all seem to have been meant to only show in one episode (I assume that might have more to do with the rights to include the book on the show, though inserts featuring existing songs were repeated in other episodes).