Your comment seems to forget that the ability is a trigger? It doesn't just stun for 1 turn, it stuns indefinitely. I compared it to voidmage because the ways to defend are similar - You either place a low-value piece in front and still have it get hit with the effect, or kill the Gorgon. I'm not sure what you mean by the last point in counterplaying, pushing elsewhere doesn't stop the trigger effect. In that way Gorgon is stronger than voidmage, which takes a turn to do it's magic. Also pieces can move after being exposed to void magic which helps a little at least. Of course, the fact that it can only target 1 unit is a weakness, but poison/thunder will be pretty effective at ignoring this. With range 7, I would prefer gorgon+++ over voidmage+++ in most setups, even if they were costed the same. (others may disagree)

You misunderstand point 3. The objective is not to benefit the opponent with an offensive setup, but to force offensive play regardless of the setups, or perhaps to force your own army into being more aggressive.

I agree that displacement immune is weak for the first few tiers, I meant that it could be part of a solution, not the whole solution. For example, displacement immune with a starting teleport. In my opinion, displacement immune T3 is still very strong.

Also, scores aren't final until the tournament is over. So you aren't really disqualified unless you don't edit your unit.