Board: sort by date, unscheduled last

When sorting by date on boards (without grouping), the unscheduled tasks come up on top, before the scheduled tasks. Which makes the sorting not very practical and useable. I believe it would be better, when sorting by date, to have the scheduled tasks on top (ordered by date), and the unscheduled tasks afterwards.

This would be when sorting is done by date with no grouping. Grouping in this situation doesn't work for me because there is too much "empty space" and I can't glance all my scheduled tasks at once.