Well, no, not in a naive way, because with left click select, left click is used for, well, selection.
However, the issue is valid, and we talked about a few ways to make scrubbing the playhead nicer with LCS:
- Left clicking in an empty area can set the playhead to that location
- Left-dragging the playhead along the bottom (or top) could move the playhead
- Shift-RMB dragging anywhere could serve as an alternative way to scrub the playhead, consistent with how you can always set the 3D Cursor this way in the 3D View.
To make #2 work well, we would ideally split the scrollbar away from the frame indicator groove, like so:
This way you could still use the scrollbar normally, but clicking anywhere in the groove at the top would move the playhead. This goes beyond the keymap itself, but it related due to the implications of wanting to use the same mouse button for different things.
It has the added advantage that the scrollbar could look more similar to our other scrollbars.