When your smartwatch screen is of, and "bezel wake-up" is disabled. You should be able to control the sound the watch or a bluetooth connected device produces by turning the bezel.
I would suggest to send your idea direct to the Samsung Developers via the Samsung Members App @Delta0404
Daily Driver > Samsung Galaxy s²³ Ultra 512Gb in Phantom Black.The advice I offer is my own and does not represent Samsung’s position. I'm here to help. " This is the way. "