New York news station WINS uses one of my favorite slogans, "You give us 22 minutes, we'll give you the world."
Even in an age of instant online news updates, I still think that's one of the best slogans I've ever heard. Not just any station promises you the world. I like that image of a station striving to live up to such lofty idealism. It conveys to me, "Keep listening, and we'll keep you well-informed."
That's the image an all-news station should present.