They definitely need to address the cheating in tournaments. I'd rather just have them be NPC only. Just expand it outside the battlehall. Maybe have regional tournaments. All NPCs in the Limsa areas, or Heavensward areas, and just grant more points based on NPC difficulty.

Decks should be allowed one 4* and one 5*. This should really be a no brainer.

I agree that all Triple Triad cards should be available through playing Triple Triad, and not through RNG in some dungeon, trial or raid. At most, you should only have to finish the content in order to play the NPC that has the cards.

There should be a cap on number of wins, or number of consecutive wins before an NPC drops a card. Players shouldn't have to win sometimes hundreds of matches to acquire a card.