This asks in this item are on on the backlog. In the meantime, hopefully this article will help so you can adjust your view to your liking:
An error occurred while saving the commentFlemming Jønsson commented
I also would like some way to control this. Manually would be fine.
I really don't get why people without video feed is getting just as much screen space as those with video.
Why would I want 1/2 my screen to show a profile image while the video of the person/meeting room who is streaming end up getting cropped.