To paraphrase from Tim Keller:
A church that is Gospel believing, Gospel proclaiming, but not Gospel centered, is not worth attending. Though not worthless.
Original quote: "...it is not enough to not be Gospel centered..."
Churches I've left are all generally in this category.
It is a nice way of saying: Don't just preach out (look at others), preach in as well (look at yourself, look in the mirror).