While I also see an appeal in DelaWho???'s description of the seedy pool room scene, I think my answer to the OP's question has nothing to do with stereotypes or reputations: I want to watch pool on TV, the way tennis or golf is covered. I want to be able to turn on the TV during a big tournament with all the sport's heavyweights waist-deep in competition, and find out who's doing well, who's been knocked out, what the upsets were, what the highlights are (good safety battles, especially impressive outs), and be able to watch some of the matches in their entirety, live. And I want the players I admire for their determination, professionalism, and most of all immense skill, to become celebrities like the top golfers or tennis stars. That's why I want pool to have a marketable image. I love pool, and I want to be able to follow it like I follow other professional sports, not just on obscure websites with a brief video clip of actual play every now and then.
-Andrew