Alert for instructors when setting due dates beyond course shell closing date?

Anna.C.4617

Hi,

Is it possible to add an alert for instructors when they're setting an assignment due date past the closing date of the course shell? I've had two instructors set due dates past the course shell closing date, and I feel like the confusion and frustration it causes for students could be easily avoided by either an alert or not allowing the assignment to be posted until the due date was below or matched the shell closing date.