I think you should try using the AirTV a little more and re-write this. First & foremost, yes, the Sling TV is the main point of the gig; however the diamond button at the bottom of the remote, that you said has no clear point, simply brings you out of the Sling TV interface and into the Android TV interface, where you can get to a slew of other apps, such as Kodi, VLC, ES File Manager (all of these have to be downloaded from the Android TV store) ect..... Your article makes it seem as if you're literally stuck in the Sling TV interface w/ no viable way to get out of it. It's really quite simple. Press that diamond button and you're at a regular Android TV interface. It's all extremely simple to navigate.