Is it possible to make them rarer and rarer? So lets say a legendary appear in 1 of every 50 packs now. What if that number decreases in time. Each time someone finds a certain legendary (or rare) card the chance of finding it again decreases. Yay-found it, now the chance is 1 in every 51 pack. Next time someone finds it, it will appear in 1 in every 52 pack.
If the cards are basically infinite I don't see the investor value...I just bought a bunch because I took for granted that they were in limited edition..kind of dissapointed. Even though I love the project, looks cool and In was almost addicted - but knowing that the cards are in unlimited supply sort of turned me off a little bit.
Yeah, I second @scandinavianlife's thoughts on the matter. You're right that the 'speed' that people want to get to certain levels at will influence value of cards/create a scarcity 'effect', when it comes down to it, some eventual literal scarcity would be hugely beneficial to the value of the cards and the incentive for people to get more and more and treat them as a collector's item like other trading cards are. :)