In response to my post about the news that Glee's being renewed, Andrew wrote that if the show is canceled in season or two"that may not be a bad thing. I'm not sure if it's the kind of show whose premise can support more than a couple of seasons without getting stale. And of course there's only so much good music you can work into a show week after week."
I actually think this is wise counsel for a lot of television shows. It makes much more sense for artists to go into a show with a vision and a sense of how long it takes to tell the story they're working on, than to spin shows on without end simply because they're popular. Not everything has to last forever, and not everything should. If it takes a couple of seasons to tell Glee's story, and then that story is over, I'm absolutely fine with that. More rotation in the networks' slots, as with New York Times columnists and Senatorial seats would be a good thing.