And for another example, 42 pre-order players, last year you could get them all in xp reward path, now you can only buy them in the auction house.
I would bet that there are more of those packs coming soon. Likely in conquest maps or future inning programs. There's a 42 series collection. I can't imagine they made a collection and then capped the supply of the cards needed by only giving out 1-2 of them to everyone who pre-ordered.