Have a friend who very much enjoys just using banshees but is always running out of cards. I keep telling him that if I could trade him all of my banshees since I don't use them I would. Then I got the idea that there should be a separate req store to spend points on to buy individual cards that the player can use instead of leaving it to chance and hoping to get one in a req pack. Of course you cant buy these items until after you've unlocked the permanent from the req packs but it gives people the opportunity to play and use what they want more.
Req store for individual card purchases