I doubt they'll add ALL of the GBs in this event, the curbstomp'll be too real. i would like to see Darius and gyz. along with hoplo and a few of their support spells.
GB are OP already not unbeatable but very consistent i dont like the idea of more support cards for them...but we will see. if there goin to make them unbeatable for another time im runnin SSA Deck .
If they get Gyzarus (which I doubt, very very much because 2 cards being destroyed is too valuable in a reduced field size) then you better always have a citadel whale on the field to negate that effect and destroy it. Combined with SSA it would mean that Gyzarus can't do anything since your spells/traps would be protected and your water monsters as well.
War Chariot would be funny since even gladiator mirror matches would abuse it to negate their switching and it can be recovered with Equeste. A recyclable costless Divine Wrath would be really strong for the deck.