Mekos, I understand where you are coming from. However, as somebody stated, on a local scale it just doesn't work. There is normally one player who consistently beats the other players, hence making him the best. That would be me in NC when I'm there. I could literally team with the 2 little kids who came for doubles and win just because I wouldn't lose to anybody. I would literally sweep entire events.
However, on a national scale it works...but it is a lot of time and a huge commitment of people. Crews are one match, although they can take a long time. If a 3v3 tournament were to unfold, pretty much nothing else could happen simultaneously since 6 people are occupied during a 3v3 match, and multiple matches would be going on at the same time. It is a huge time commitment and, IMO, not worth it since people already know who the good players are. You might as well just have exhibition matches like "Nairo vs DEHF" randomly streamed.