About the sound. I know several RU-vid podcasts that each person at each location is recording the audio as back up so I don’t know if that’ll help you at all. Because I’m not sure if it’s just one person doing the audio only I’m your end.
The point with the extra thinness and lightness is that the 13in iPad Pro is now thinner and lighter than the MacBook Air with the Magic Keyboard. That’s not even getting to the 11in which is lighter still