The only way the format adapts is to increase the average casting cost, which in turn puts too hard of a focal point on whether or not the first spell each game gets countered for free
(That's one total, not one per Pokmon-GX!) Each Pokmon-GX has a maximum of two attacks in addition to its GX attack
But what are the cards, you ask
R Rare Swordsoul Emergence X SPELL Add 1 "Swordsoul" monster from your Deck to your hand, or if you control a Synchro Monster, you can add 1 Wyrm monster instead
UR Ultra Rare Dinomist Ankylos X WATER Level 4 [ MachinePendulumEffect ] ATK 1500 DEF 2000 P Scale 6 Once, while this card is in your Pendulum Zone, you can negate an activated card effect that targets another "Dinomist" card(s) you control, then destroy this card
If you built Isshin when Kamigawa: Neon Dynasty came out, youre going to love this card