Nice topic! I have no relevant experience as a developer but from the view of a buyer or gamer, I would say “game exposure” on the app store is also an important factor.As appstore is the place where I discover most of my apps also most of the time I won’t spend too much time searching for those "buried’ apps. I believe most people are just like me. So a good rank will get ur app more attention and definitely bring more traffic. I read a blog about app store optimization which is just like SEO brings your website at front place by google search.