Is it an idea for us fragmented Catholics to put to use? Even on a diocesan level? Doesn't "One Book, One Church" have a nice ring to it? Of course, the use of the term "One Book" leads one to assume it's the Bible we're talking about, and I suppose a book of the Bible would serve the purpose at hand well, but might there other choices?
I'm trying to think of a book or to that might work, but it's not as easy as it sounds: to pick a book that would please almost everyone and be accessible, as well. I'm looking at my bookshelf here. Let's see: The Power and the Glory, maybe. Perhaps something by Jon Hassler. O'Connor's too complex, David Lodge and Walker Percy would offend many with their language and content, Waugh's too British (for the average American Catholic). Maybe Mariette in Ecstasy?
Something to think about. But, guaranteed, if a diocese actually did do something like this, they'd end up picking some pap like Joshua, or maybe the bishop's master's thesis, self-published especially for the event.