A few times in recent months (including tonight), I've been trying to determine what Muppet productions are most/least obscure. I've been thinking in terms of how often they've been rebroadcast, whether they've had video releases (and how many releases), and a few other things. And maybe all those alone don't determine how popular a certain production is (but the more broadcasts and video releases its had over the years probably helps). And I wouldn't count whether they're on YouTube or Daily Motion (unless Disney officially uploaded it there), or how common it is to find long out-of-print video releases of such productions (just because there's quite a few video releases I can't find used copies of anywhere doesn't mean that they can't be more commonly found in other states). Maybe someday I'll post what all I've determined (maybe here, maybe in its own thread, maybe as a Muppet Mindset article).
But on a similar note, I tend to think about how Fraggle Rock seems to be the "lesser" (or "least lesser"?) of the three big Henson properties of the Jim Henson years (the others being The Muppet Show and Sesame Street). Sesame Street and the Muppets are a lot more iconic (and have been around a lot longer). Sesame Street is one of the most iconic children's television shows of all time, and has consistently been on the air for nearly 45 years. While The Muppet Show definitely wasn't on the air that long, its characters have continued to be used over the years, with various movies, television specials, direct-to-video productions, live stage shows, television guest appearances, sequel shows, viral videos, and so on. In fact, Sesame Street also has all that in addition to being on the air for so long. But Fraggle Rock doesn't have much of that (as a matter of fact, most Henson shows that aren't Sesame Street or The Muppets don't have much of that, either).
Fraggle Rock has had a lot of merchandise over the years, though from what I've read most of the merchandise didn't start to come out until the show was ending. The show had two home video compilations, while The Muppet Show had more and Sesame Street has a whole lot more. But perhaps those shows lend themselves better to video compilations than Fraggle Rock (aside from compilations themed around songs and maybe Traveling Matt's post cards I'd imagine it'd be hard to come up with compilations). Additionally, Fraggle Rock had an animated series and now has the Doozers spin-off, and Fraggles have been making appearances in the past few years (including the Do It Anyway music video), but there have also been a number of Fraggle productions that haven't gotten made (in fact we've waited years for the Doozers series), including a Fraggle origin story and that movie that's been in development all decade.
One thing that works against it is that while The Muppet Show and Sesame Street were on channels everybody had, Fraggle Rock premiered on HBO, a premium cable channel, at a time when many people didn't even have basic cable. And it seems most of the channels reruns aired on have been fairly hard-to-get. I think more people had cable by the time reruns aired on TNT, but reruns have also aired on The Disney Channel, another premium channel (at the time), and on Odyssey, a channel very few people had. I'm not sure whether The Hub is on many cable providers or not (I don't even know if I have that channel).
And there's the fact that the world of Fraggle Rock is mostly its own magical world, though connected to the real world. Most of the characters live in a world that doesn't have all the technology and stuff we're familiar with. That puts a limit on guest appearances the characters can make on talk shows and such, with Traveling Matt and Sprocket usually being the ones to make such appearances, while the Muppets and Sesame Street take place in our world, and therefore does not put a limit on what characters can appear on talk shows without it seeming weird. It sort of also limits how the characters can appear in crossovers with the Muppets (not counting cameos or times when minor characters were used in the background or recycled as new characters).
Of course, unlike the Muppets and Sesame Street, the entire Fraggle Rock series, both live-action and animated, is available on DVD, and all uncut (except for not including the special "down at Fraggle Rock" endings from two episodes). The Down at Fraggle Rock documentary is a bonus feature, and Fraggle Songs and Doozer Music can both be purchased as digital downloads. It seems the only major Fraggle Rock productions not available for purchase are Fraggles Search for Jobs (though that might not actually count... Terry Angus once said on The Muppet Cast that he never expected that to be a bonus feature) and the Do It Anyway music video.
And it is interesting how the Muppets and Sesame Street have many specials and such, while all other Henson shows have very little. I was thinking that maybe since those two are made up of short segments and most other shows have narratives (I think I've read that Fraggle Rock was originally going to be made up of short segments), maybe they didn't feel the need to make specials for the others. But then again, most of the Muppet specials don't have much plot focus, often being made up of short segments, musical numbers, or clips from past productions. And many Sesame Street specials do follow the plot more, even if they still have short unrelated scenes.