Nobody wants or needs to get a Shiva card or Lahabrea card or freaking F'lhaminn from a Platinum Triad pack after playing through a Triad tournament.

The Platinum packs should be 100% hero cards. Probably just WoL, Onion Knight, Cecil and Lightning as common. Firion and Tidus uncommon and Cloud should be added to the Platinum pack as a rare drop.

As a tangent, it's a bit ridiculous to collect a million MGP for a card no one actually uses in the game.