Community needs a better timeslot. It did well when it first premiered in the 9:30 spot. NBC continuously makes an impressive effort to have nothing on worth watching. This is just the latest in a long list of mistakes.
Personally, I think Dan Harmon should start shopping the show around to other networks, including the Cable networks. (USA, TBS, Comedy Central) Rather than grief and low budgets, the show might get some actual support.
But do you really think there's an audience out there that would like this kind of comedy that HASN'T heard of the show? I have a feeling no. 4 million is still a lot of people, but I don't think there's a hidden audience out there.
Now, it might survive on a channel with lower audience demands, but that means a cheaper budget. Are you gonna tell Chevy Chase he has to take a paycut?