Quote Originally Posted by Maeka View Post
...why?

If everybody in the raid group has the cards, they can all roll Greed. If there's 7 or 23 people who have the card, and 1 person does not... that 1 person is guaranteed to get the card.

I don't understand why this would be a bad thing?
Because I presume the reason people are looting on these cards even if they already have them was to turn them in for MGP, and also because I don't think the Devs have added a check against already having the item that barred them from needing on it without also forbidding use of the greed option. By removing the only other possible reason why one woudl want the card (extra MGP), you can then make it so that once you already have the card, you can't roll on it any more, like what was already in place for unsellable minions/mounts.