The ability to have as many streams that you can record and unlimited cloud DVR. Add 4 ota tuners and INCLUDE OTA GUIDE information like AIR TV does for free. Include the plus box in the receiver so you would have one interface to the TV for Everything. All your apps would be accessible through the unit. No more changing inputs to get to what you want to see. The Dolby Vision and Atmos Sound would be great as well.What would you add to a Hopper 4?
For me I can't think of many things the Hopper 3 is missing. If I made a Hopper 4 it would be an Android Native receiver, and would support Dolby Vision and Dolby Atmos and maybe add a red recording light to it.. (lol) what else is missing?