Certainly the right move
Blizzards E-Sports Team kept their words and is holding the Blizzcon Tournament in a 3.1 setting as they said. Even though it did not do as well as 3.2 in term of balance, they told teams that the Tournament would be held in 3.1. And that is what everyone qualified and practiced, thus it is certainly the right move and keep it on that patch. They also had to practice it, and it is the first time that a tournament is held on any patch except for the current one. You can buy Megaten Gold at very low price here.