Yeah, when they originally said that the Greek faction would have themes of luck and fortune, I figured that the oracle concept would be one of their cornerstones.
I understand the problem with the restricted Gorgon ludus, but I think it's important to understand that they are clearly not a normal school. They're a special unique constellation, and one of the special things is that there is only three of them. Their ludus rules are printed to say that they specifically only work when the three of them are together and nobody else is there. They're not one of the four schools that the game is built around. They are an intentional anomaly.
However, it isn't impossible that RRG can perhaps think of some interesting way to get around this. By making the Gorgons restricted to size 6 games only, they have basically restricted themselves to only ever running size 6 official events if they want to keep everyone happy. As soon as they run something else, Gorgon players will complain that they cannot play.
I can see RRG not being happy with that in the long run, so maybe they will think of a solution. Maybe the Gorgons will be able to be incorporated into the Hellenic League somehow, while still keeping their Gorgon benefits.
Size 5 is also the biggest game size I have tried out personally. Size 8 seems a bit much.