Having the ability for the Agile Board (Active Sprint) to follow Subtasks order in Parent's issue

Users can re-arrange the order of sub-tasks in the parent's issue. However, this order cannot be reflected in the Agile board (active sprint mode). As the order in Agile board is based on their ranks.

Having the ability for the Agile Board (Active Sprint) to follow/reflect Subtasks' order in Parent's issue would be great to ease the users, instead of having to reorder it manually at the board side.