I agree with Jacob. This seems like an argument for sake of an argument, if you separated into an iTunes, iStore, iBooks, iShows, iFilms, iPing and iApps that would just be dumb. I probably won't use Ping but I don't really care, it's like 10 pixels in the menu and I'm sure you could just remove it. Sure it may take another 3 seconds for the app to open but in a few days I doubt I would even notice the delay. As for the icon, yea its a bit weird but we'll grow on it as we grew on the iPad, besides you can just change it with a few tweaks if you so desire. The vertical navigation bar would mean very little to very few people and it matches the 'minimal' view.