I'm glad they're looking into 6v6, but I honestly like 5v5 better. Queue times are short, games play quick, and it's easier to keep track of what's going on. It does put a lot of pressure on the solo tank, but not so much that I don't enjoy playing tank.
I'm more interested to see where they go with some of the other queue changes they mentioned. If they can add some more flexibility than "1-2-2 only" in a way that doesn't totally break team comp, that could be a lot of fun!