I frequently use the option to Shift Dates to reschedule all subtasks under a parent task when viewing that parent task on the Task Board view for the associated project.

Likewise it would be helpful to have the same Shift Dates option for the subtasks listed under that parent task when I am viewing the Parent Task only - not on in the Task Board view.

The Shift Dates option for Sub Tasks would also be helpful in the Task Board view when a specific Project IS NOT selected