Sound on hover over video preview

I notice that in order to get sound on a video you must 1. click on the preview to bring up the post page and 2. press the unmute toggle which means people miss half the video on those that do have sound. I was thinking that maybe there be an option to have sound on hovering the mouse over a preview. I don’t know if this is wanted or needed or not but I am posting the suggestion here anyhow. I know I would like to see (hear) it. At least as an user option.