And about the Python... I don't know. Queen of Memes + Zeus + Genesis looks decent on paper, but Urd + Genesis deals more damage. Isri and Lucy heal well, but you can put two Civils at once, and let the enemy's head hurt. When the Bahamuts and Evos run out of Isri, the Salamander won't come. In the Storm, you'll have to pray for Genesis and maybe Zeus, because Fortuard will be sent to the sauna (perverts can use Gilgamesh instead, he's exactly 8 PP, but...).
In general, it's not that simple. You need to see it in the game. I put this on the same level as the Queen of Memes and Dark Alice - it can be effective and very efficient, but it balances on the verge of viability and being just a meme.
They've buffed the late game, basically. There are games where you don't get anything but crappy cards, and you discard several low-cost cards from your hand, losing the board and then the PP advantage.