Different Screensharing layouts

Hi, I would like to propose a feature for the screenshare that I feel it should be there by default? Quite often I screenshare with my friends but the layout is sometimes really bothersome.

For example : When I have 2 friends sharing their screens, sometimes I would really love to be able to put their streams over eachother (vertically) but instead I am stuck having them to be Side by side

So currently it is like this :

To have the option to put them like this (maybe with a stretch option available too) : 

I feel that sometimes depending on the games, it would be a lot easier to be able to rearrange the layouts like this. I could also easily see how this can be also used to provide a somewhat splitscreen experience to some gamers (Like they share their screen, but looks on the one that have the split screen like this)

Thanks!