Thanks very much, @Marie, for this reply and on the other thread.
While I understand your point, I don’t feel there’s any greater confusion to supply the expand/collapse twisty.
Right now if you open the task detail pane in My Tasks you’ll see subtasks assigned to others, and certainly there’s no call to hide those.
And from a different perspective, when you’re in a regular Project List View (not My Tasks) and you click the expand/collapse for a task you’ll see subtasks–these subtasks have no membership to the project itself (only the parent task does) yet they’re shown in the main Task Lists pane as indented subtasks. That is exactly a corollary to my request for the same in My Tasks.
Making it easy to see the details of a task is expected to reveal contents that wouldn’t normally be found in the main tasks list view; in fact, that’s the whole point of looking within the task–because you want to see the contents of the task.
It’s an incredibly useful feature to have this in Project LIst View. Why would it not be the same in My Tasks where many end up spending even more time?