tvQuickActions allow you assign 5 actions to button of your remote and add a lot of useful functions to your device. Supports Android TV Google TV and AOSP on most of devices.
Features:
* Mouse toggle on any remote
* Recent apps on any device
* Media control panel
* Bluetooth manager
* Support remapping Netflix button on Xiaomi devices
So looks like most interesting mapper for TV devices. Even if you don't have a button you don't need there is a button that is rarely used. And with a double click you can perform its usual action.

You can also choose from different actions:
* Open the Voice Assistant (both voice or keyboard interaction)
* Open an app
* Go home
* Open recents
* Go to previous app
* Toggle WiFi
* Toggle Bluetooth
* Toggle Play/pause media
* Fast forward/rewind
* Next/previous track
* Open media control panel (with play pause stop next/previous track)
* Take a screenshot (Android 9.0+)
* Open a URL
* Open power dialog
* Open settings

IMPORTANT!
Some actions may not work on your device. It depends on many factors such your firmware Android version etc. Please notify developer if something go wrong and refrain from giving the app a poor rating since the issue is often out of the developer's control.