It would be a little bit pointless.
First, all cards can be printed for friendly skirmishes. If you want to test something, people might even agree to treat an empty base as Morrigan so cards printed/substituted are tolerated.
Second, tournaments outside Spain are extremely rare and most players usually have the cards they need to run with their pre-made lists. The demand on the product isn't big enough.
Finally, the game grows bigger each month and there is no limit on how many types of 1 card you can have. Should we put 6 copies of piercing weapon or only 4? Or, how many decks should the wissenshaft player buy? How often should a new deck be published? These questions touch on the issue where $$$ can have a greater influence on the game than skill. I don't want AT to change into a game where the person with the newest advantage cards, most expensive/newest figures wins, like the first Warmachine/ Hordes. There are still some players who dislike PP due to their previous unprofessional release policy.
You could easily break up deck releases into sagas, eliminating the need to reprint updated decks. A saga 1 (or 1&2 would be easy enough too) would always have the same cards in it, even when saga 10 comes out. Including one of each plot card and, probably, two of each non plot (non team, non character specific) card would be good enough for 95% of players. Talking about including 6 copies of piercing weapon to appease the 3 players that actually want that, and then considering it not worth it if you aren't pleasing those 3 players is silly.
Despite the rampant pro-piracy mentality much of the pop culture is seeming to take on these days, many, I dare say most, mini gamers want to use authentic "legal" versions of whatever their using when they can. It's not uncommon for someone to play one game saying "alright, this figure is really this other guy for this game". But that's usually done to test out that character...and if it works out is usually, then, purchased. Not continued as a proxy ad infinitum. Any game that you purchase inherently comes with an advantage to the person that spends more money...period. The only way to prevent this is to allow 100% proxying. At that point, why even bother spending any money at all. You can just play with pennies and coke cans. You just draw proxying lines at different places then other folk.