In some scenarios mounting a webex mini camera below the screen works better. It would be helpful for the installer to have an option when configuring the device in the hub to designate the position of the camera above or below the screen. The stack screen layout would then ideally reformat to have the participants close to the camera. This change would restore the immersive meeting experience of having the people in the room apear to be looking at the online participants.
In Stack layout, content appears on the main screen with up to 6 participants in thumbnails across the top. Here's an example of Stack for a Webex Room Kit:"