As a business user most data I deal with is hierarchical, and in most cases a "task" needs to be broken down into subtasks and finally into concrete "to dos". This requires more levels of subtasks than what is possible in ToDo just now.
gets my vote
This would be very helpful as Lists are not granular enough and a subtask list would make things clearer and cleaner to group tasks within a list.
This would be very helpful.
I'll have to strongly agree here. As a project manager, this would be highly useful. Right now I have to create multiple projects for one to handle the subtasks.