Last season Parks and Recreation had a midseason episode that was originally planned to serve as a finale before NBC unexpectedly gave it another half-season, and then renewed it for this (its sixth season). So they were all planned to wrap things up before NBC basically ran out of shows and brought it back. It's still unclear if it will get renewed for a seventh season, but Rob Lowe and Rashida Jones leaving makes me think this is the last year.
Funny thing is, NBC pulled the same
exact crap with My Name is Earl. Only, in Earl's case NBC gave them a vague promise they would come back, and then pulled it out from under them at the last minute. Thus, MNIE ended on a cliffhanger.
But anyway, back to the point. The reason why sitcoms seem unoriginal from time to time is that experimental sitcom formats
kinda don't work out unless they're really really careful and lucky. On the one hand, you can get something so specific that only the most niche-y of niche audiences would bother. On the other hand, sometimes a concept sounds great, but can't sustain itself for a weekly sitcom basis. I've noticed that there are a LOT of shows this season that would have worked better as movies. Back in the Game, even if it was good, couldn't sustain a continuous plotline for a weekly sitcom. You either wind up having the underdog team continually suck (repetitive) or you get them accepted and winning games too early and lose the concept.