Please add play/pause shortcut on space-bar.
This is a widely used shortcut in many players and many users, especially dealing with professional editing expect it to work that way.
I've had this situation a few thousand times. I hit space, then again, and again until realizing it doesn't work.
I remember that it doesn't work in DJV but I still keep doing it as a reflex.
Play/pause is primary control for a player thus space-bar is ideal shortcut.