Is there a way of displaying the Assignee icon on the sprint board when the task includes subtasks?

[Georgia]

For context, I'm trying to get a team to adapt to using subtasks and one of the points of resistance is that, without opening the parent task, it is impossible to see the assignee of the parent at a glance. I actually understand this, as immediate understanding is much less frustrating than multiple clicks. 

Anyone know if this is possible? Multiple searches have returned no results.