User feedback is not the only way, because the number of downloads is also available.
Also, I think the Google Play Store for android is a great example of what I said. It's not that much complicated, it's simply about presenting the right data in the right way. It's also possible to find a happy medium by having automatically sorted lists alongside "Featured" games, or "Staff picks" that are the publisher's favorites, to boost the visibility of specific games. In that case though, I think the publisher has to choose carefully, because putting uninteresting games in the "Featured" section just gives the message that the console really has nothing in store, even if that conclusion is not necessarily true.
I think this is OUYA's biggest problem. When you search long enough in the store, you can find very nice hidden jewels, yet they put games like The Amazing Frog and No Brakes Valet in the featured games (which in my opinion are some of the least polished games I've ever seen).