Because Glee loves proving that it can, in fact, always get worse: the Warblers are coming back
“I think [Sue Sylvester’s] back as principal [in the final season of Glee], as far as I know. I think we’re going to have some surprises about who’s going to be the choir director of The Warblers and who will be the choir director of Vocal Adrenaline. I think it’ll be a big surprise.” -Jane Lynch