Sub-tasks relation to parent when sorted by date

When sorted by date, tasks show under assigned dates. In this case it's not clear what are the parent tasks for this sub-tasks while it's usually important.

I suggest that in views that loose relation to parent tasks each sub-task can be displayed as:

[ ] some parent task > some sub-task1 > some sub-sub task 1

or maybe shortened to some number of symbols for each level:

[ ] some pare .. > some sub.. > some sub-sub task 1

or maybe at least a mouse-over tool-tip.