Make it Easier to Find and Identify Orphaned Subtasks

Until Asana implements the Subtask improvements of automatically adding/displaying a Subtask in a Project and not allowing Tasks to be completed with incomplete Subtasks, one of the consequences is it is easy to orphan Subtasks and hard to find them.

Orphaned Subtasks being incomplete Subtasks of completed Tasks.

Please add an option to search to find orphaned Subtasks.

In addition, please make it easier to identify an orphaned Subtask by indicating in the Task list entry and the Task pane of Subtasks, that the parent Task is complete.

I think an additional filter added to Advanced Search around parent tasks and their completion status would solve this: