Personally on any future device, I'd rather it just overlay volume and other important information onto the video source.

These days there's so much info that has to be crammed onto the front display that it's hard to make any of it readable from far away, unless they go to an OLED or other type of pixel display, which would probably increase either the cost or system noise prohibitively.

Much easier these days with a modern video processor to just overlay it onto the video stream. As long as you can do that without adding noise to the video stream, that's the way to go.

That's my two cents on that anyhow.