+1 In fact, this is common practice in debate classes and is a good idea all around.
I really like this idea (that's why I came in!) but I have the feeling that it will fail so long as video is a requirement. Bitcoiners are still, as a majority, horribly afraid of revealing their personalities and likenesses for fear of trolls and other things. Most of the people on this forum won't even give their real names. I think removing the video and allowing just "live arguments" by chat would suffice. It's less sexy, but bitcoiners (the ones who hold bitcoins) will be more likely to participate.
Just my two cents. I'll be happy to support it just the same as I love debate!
Wear a mask and change your voice!