I want to time cuts to a rhythm of a song.
Realtime highlighter.... so while you are playing a clip you can push a button or hotkey and it will drop a single frame highlight/quick guide. And if you hold the button down you can highlight a section of time. You could even have a colour swatch for different colour highlights.and a clear button for clearing all colours or just one colour.
Load song play and press button accordingly. Then time cuts to those highlights.... awesomeness.