Microsoft To Do needs to add the feature to enable the user to sort by more than just one attribute.
Presently, for example, I can sort alphabetically. This causes my completed and still-to-do tasks to be intermixed (and displayed in alphabetic order).
[ I could hide completed tasks, but that's not the way I want to use To Do ]
I want to be able to "Sort first by Completed, then within each of the two sub-lists that sort order produces (all of the still-to-do items first, then all of the completed items) further sort alphabetically".