I literally just created this account to basically feature request? If that’s even possible. People need this to time their videos/images to the beat of the music (me) and it would be nice to make this not a pain to deal with using this feature.
You could do it with Da Vinci’s Implementation with the K key (by default) and add a Shift + K keybind specifically for slowing down video playback. Just any way to have this at all, I would be very happy.