The humans may be unimportant now, but when the show started back in 1969, yeah, they kind of were. For one thing, that was the whole point of the inner city street setting, to project a sense of realism and believablity to the kids of their original targeted audiences, and that included bringing in people you might actually find living on such inner city streets. Also, at that time, the show was revolutionary, because the show started out with only four human castmembers: Gordon, Susan, Bob, and Mr. Hooper - as Jon Stone pointed out, half the cast was black, and they were co-existing with characters that were white, which was still pretty odd and rare at that time; shows like SANFORD AND SON and THE JEFFERSONS were still a few years away.
Yes, the Muppets are the real "stars" of the show, and the human castmembers are aware of that, but at the same time, the human characters are also there to help teach and enlighten the Muppets, and through them, the kids at home.
SST has always balanced fantasy and reality. During the test pilots, there was too much reality, because kids became bored with the show until Ernie and Bert were on, which is why they ended up blending reality and fantasy by having humans and Muppets co-exist on the street (hence the main reason we have Big Bird and Oscar). So, I'd say the humans still serve an important part in the Sesame universe
Yes, the Muppets are the real "stars" of the show, and the human castmembers are aware of that, but at the same time, the human characters are also there to help teach and enlighten the Muppets, and through them, the kids at home.
SST has always balanced fantasy and reality. During the test pilots, there was too much reality, because kids became bored with the show until Ernie and Bert were on, which is why they ended up blending reality and fantasy by having humans and Muppets co-exist on the street (hence the main reason we have Big Bird and Oscar). So, I'd say the humans still serve an important part in the Sesame universe