Andy Baio has a very thoughtful piece on how the App Stores (plural) could gain by adding a true social layer and help users find better apps for them.
Andy is right. Very little has been done to change the rules.
All the updates we’re seeing with the App store are about preserving the same model based predominently on editorial curation. Even IOS8 is mostly about cosmetic changes and not about a deep revamp that will change the rules. Andy is suggesting to add some identity layer, a way to follow users, get the recommendation from your friends and organizing a feed of information in the App store the same way Apple tried to build it for music and Ping (but with a failed implementation).