Persistent Notification Dot for Missed Calls

You know that little red dot you see on your phone icon that tells you there's a missed call? Well, it would be so much better if it went away as soon as you checked your phone. Right now, you have to toggle between all your calls and just the missed ones to make it disappear. It would be awesome if just opening the phone app or clicking on the missed call could make that annoying little red dot go away.