I then thought about drawing on top of the video stream so you can use as like one os those games where you have to guess what the other people is drawing or, to coach someone one to one and being able to "comment" on their screen as they speak, but again, I'm pretty sure every video chats does that. So I left the idea on the drawer for now.
https://www.youtube.com/watch?v=yS3_CRr7tys (draw on the stream)
I was thinking something about Yahoo used to do: a chat room with several types of games and you and your friend could play one of those games while trash talk to each other on video
https://news.ycombinator.com/item?id=22790728
https://rootshirechess.glitch.me/ (https://glitch.com/edit/#!/rootshirechess)
Heck, maybe the Zoom ubiquity might have removed barriers for entry !