Celluloid (formerly GNOME MPV) is a simple GTK+ frontend for mpv. It aims to be easy to use while maintaining high level of configurability.
Celluloid is capable of using mpv's configuration files as-is. Keybindings can be set up using mpv's input configuration file.
Drag and drop playlist
The playlist entries can be added, removed, or rearranged easily with drag and drop operations.
Celluloid implements the MPRIS D-Bus Interface. This allows for better integration with desktop environments that have compatible MPRIS clients.
Celluloid is fully functional on Wayland.