There comes a point in the life of any TV show (and especially any TV sitcom)—usually around the fourth season, shockingly enough—where it becomes less important to create groundbreaking TV and more important to manage the brand.
The last season of Community was not a letdown, but I could tell that it was made for their fans. No one new to the series could start watching this season and really enjoy it.
Todd VanDerWerff’s review of “Heroic Origins” explains this and talks about how “there’s nothing wrong with still loving Community, but it’s become almost entirely a show about getting you to love Community…”
via The A.V. Club
Source: The A.V. Club