Sometimes I add subtasks either under a main task (or within a task list) and the way I added them don't necessary correlate to the date I assigned them. I would like to be able to "sort" under a task, and all the substasks re-arrange in order of due date, instead of the non-organized way I entered them. I know I could manually re-arrange, but that would take a long time, and it would be nice if they could just auto-sort if I wanted!