There are (according to my search) over 2,250,000 current apps, and according to Tim's recent keynote 1,000 new submissions per hour. Apart from the account the Freemium payments go to, it is hard to imagine something being distinguishable from what is currently available. Those at the top of any list (apart from the giants) are distinguished by how much they paid Apple to get there. Sure "no more flashlights" is enforceable, but 1,000 new apps per hours being compared for similarity against 2,250,000+. Seems hopeless.