Provide ability to hide tracks, or minimise their depth on the timeline for a temporary period to avoid having to scroll between tracks being focussed on for editing for a time..

If working with multiple tracks you can find that you are focussing on one or two more than others, but you are having to scroll between them. To some degree this can be overcome by reducing the size of the player, or undocking it, to allow maximum expansion of the timeline area but it would be much more convenient to just be able to temporarily hide tracks not being worked on, or minimise their depth. If working with a considerable number of tracks even maximising the timeline area may not resolve the issue, whereas ability to hide tracks, or minimise their depth, would.