Having completely lost interest in Community
last year, I'm happy to hear that Harmon's coming back.
It'll be interesting to see how Harmon handles S4. One of the things I like about him is that he makes a real effort to get into others' heads, even when he doesn't necessarily like them much. He once said -- I am paraphrasing from my memory of Harmon's Reddit AMA, IIRC -- of Chevy Chase that he found his insistence on fighting to be acknowledged and respected to be inspirational, the best thing about him, and to be the chief virtue of Chase's that they'd tried to bring to Pierce. So Harmon is a guy who can emphasize with people even when you'd think he couldn't. He may well take a far less harsh view of S4 than many think. (I say, having seen only four episodes of S4.)