Those are some pretty images. I agree, those seems like neat ideas. Unfortunately, no matter how easy a feature is to add, it's the support side of things that comes back to bite ya. I was wondering how hard it would be to setup my own WebRTC based site and then point vMix to that instead of vmixcall.com/vmix.at. That way anyone who wants could code up features like you suggested, and then offer it to the community at a compensation rate that would be commiserate to the cost of the development and support.

Note, that while I agree your suggestions would be neat features to have, I personally wouldn't use them. And as someone who wouldn't need them, I don't want the cost of my licenses to go up, so I wouldn't endorse the vMix team to implement them unless they have nothing else to do.

Easy to create, Hard to support, difficult to find a wide user base that would get a solid ROI from the development.

Bast of luck. I hope you figure out a convenient and supportable solution to your challenges.