I don't know about all of your ideas about the cards creation but I'll tell you 1 thing for a fact. I worked for Terry Hines Co. who did the print ads for the Batman movies. Every movie we did, the company would get merchandise, hats, t-shirts, and surprise a box of Joker decks which we all helped ourselves to. I personally have had 7 decks, gave 2 to friends, sold 1 and still have 4 decks left 3 of them sealed. We received the decks with the posters and other movies merchandise. The deck that sold Nov. 5 2023 at auction went for 3,750 pounds and is the same as the 1 open one I have.