I have nothing against team tournaments. I just think it's silly seeing people going "Why isn't this a team tournament?" when the game wasn't designed for that sort of thing. You can enjoy it, of course. But when you're talking about a serious, developer-sponsored tournament, you're going to play it on the mode best suited for competitive play. That mode is 1v1, for very obvious reasons that I really shouldn't have to point out.
Some very well argued points by yourself in this thread, I agree with you mostly on the 1v1 vs. team game front for serious competitive tournaments.
I'd like to hope you're wrong in your cynicism about Relic only doing a few modest tournaments to tick marketing boxes though, although I'm not saying you're wrong, I'm just hoping that you are.