Glee star Matthew Morrison recently admitted that the influx of new characters was part of why the show went downhill over the years.
Morrison, who played Will Schuester for six seasons on Fox's Glee, admitted to Vulture recently that the newer cast members did not "click" with the audience, which was part of why the show declined in viewership.
"Glee had its heyday, and then it kind of just slowly started declining," at which point it wound up on Fridays for its final season, "which no one watches. It's where shows go to die.
"There were just so many characters," he explained. "There are a lot of people and a lot of story lines. It's one of the biggest casts on television. They have the New Directions, the original New Directions, and then you have the new New Directions ... The new ones didn't really click with people, so they had to start bringing back in the old people."
The final season of Glee did indeed feature the older kids coming back to McKinley High for a variety of reasons. While the show continued to introduce new characters even in the final season, it also focused heavily on Rachel (Lea Michele), Kurt (Chris Colfer) and others who have been there since the beginning.
Despite Morrison's claims that the show declined eventually, he does think it was very influential in a positive way.
"I look at arts programs now, and I feel like theater is where the cool kids are, and it's kind of changed," Morrison said. "Theater is now accepted more than it used to be."
Glee concluded its six-season run on Friday.