I found a great add on in the firefox extension store that allows you to navigate browser screens with keystrokes, exactly the same as a traditional TV remote works in traditional TV apps called : Keyboard Surfing by Somnia
Pardon my wishful thinking, im just an armchair engineer.
It would be neat-o if
- This was built in to bigscreen by default
- You could re-map navigation keys
- If it would work seamlessly between the homescreen and any custom apps. preventing the need to use a mouse or cursor in any manual way