What a cool idea! Not sure if you’ve done it already, but it’d be cool to embed video calls (maybe with WebRTC?) in your UI so you can have that more visceral sensation of playing against another person.
I have considered adding an audio channel to a match, yes, not video though. I figure people who use it to play with friends are already going to be using discord, and people playing against strangers are very unlikely to want to make video calls. I could be wrong?
When I was 10 years old and first getting into MtG, I was often playing against kids in the school playground that I didn’t know. It became a great way to make new friends.
Also as far as I’m aware, Chatroulette and Omegle are still going strong, and those are all about video chat with random strangers. I suspect that a MtG server would net fewer instances of indecent exposure than the aforementioned two also.
Probably not critical, but perhaps a worthwhile product experiment?