Thank you for your continued feedback, we have not forgotten about this ask. We have a feature on the backlog for popping out content, so you will be able to see one screen with the video gallery and one screen with the shared content. We will share an update as soon as one is available.
For the separate feature ask for full screen option, please upvote and comment at https://microsoftteams.uservoice.com/forums/555103/suggestions/41277121
For split screen camera and desktop, please upvote and comment at https://microsoftteams.uservoice.com/forums/555103/suggestions/37118773
An error occurred while saving the commentJason commented
Please add a true full screen functionality back into Microsoft teams. This would be a very big help!