In the core game, there aren't 3 copies of each card. Some of these can be very useful/powerful cards like Dwarven Tomb, Beorn and such.
The choice then, is whether to just 'do' with 1 or 2 copies of certain cards or buy 2 more core sets! Of course, buying 2 more core sets means having tons of cards that'll never really see use and can't be traded for cards I'd like to have.
Why not offer a "special" pack of cards with duplicates of those cards not given 3 copies of in the core game? You could even make it "print on demand".
This way, people can buy the duplicates they need, and there aren't a whole lot of unusable cards floating around in limbo. If nothing else "think of the trees you'll save!" ; )
And the players will love you helping them get the cards they want without having to buy 2 more core sets just to have 3 copies of all the cards they need for the decks they want to build.
Anyway, my 2 cents. Chime in if you agree...


