This idea has been developed and deployed to Canvas
Please allow instructors to mute (and unmute) all assignments at once. At the end of a grading period, instructors are in a flurry of grading activity. Meanwhile, students maniacally monitor their grades, creating an unhealthy obsession. Couple this with numerous "grade change" notifications and the situation becomes even worse. If instructors could mute everything while they grade final projects, assignment submissions, and exams, then unmute all at once, it would create a healthier grading environment for all.