List all submissions by "seen" and "not seen" so I can respond to my students in a timely manner

Think of the view submissions as an email "Inbox" - you want the same kind of features as you have to manage all this "input" coming at you and the more tools you have the better to filter. Certainly an Inbox has the ability to say show only just the "unread" messages. I'd be happy to provide some real feedback for developers on this area as the main purpose of my Heartbeat community is teaching classes. I am retired now but all my life I developed software.