Coreboards should have the option to show subtasks

Problem Definition

In Jira Cloud, the Coreboards currently only allow you to see issues of standard issue types. There is no current way to force this board into showing issues that are subtasks.

Suggested Solution

Allow option to show subtasks on coreboards.

Why this is important

Users cannot see subtasks that might exist in that project when looking at this board. Since subtasks and their parent issues do not always have to have correlating statuses, it is possible that all the parent issues could be marked as completed when there are several subtasks that have not be completed. It would be helpful to be able to see these on this board.