Please make the iOS-App with the combination of the AirPods the highest codec contactable.
Because Opus-Music is not to be felt but only a bad mono codec

And by the way, should one or both AirPod(s) be empty, then the speaker & the microphone should be be muted.
If I play a playlist on iTunes Music and an AirPod goes blank then the playlist is paused, just imagine You are traveling by public transport and suddenly one or both AirPod(s) go blank...

P.S.: Please update the overlay to iOS 11 and also implemented the iPhone X Design.