Media and devices
com.samsung.android.mdx.quickboard
Removing this package does not prevent you to connect your phones to smart devices, but oddly enough causes the brightness slider in the notification panel to not be displayed in landscape orientation (it's still shown in portrait) on some devices.
Kind of a hub for managing the media played on smart devices (e.g play music to 2 Bluetooth devices simultaneously with Dual audio).
Has a lot of permissions and asks for ACCESS_COARSE_LOCATION, QUERY_ALL_PACKAGES.