I'm not sure if I'll make one. And if I do, I'll probably start with the 16 "head" ones (Jack, Horseman, Queen and King of each suite) as that would make for a more versatile game (French Tarot decks are really used only for Tarot. But remove the 22 special cards and you just have a regular deck! Well, I guess you also remove the horsemen, but you know what I mean. And with a regular deck you can play much more games).
As I said I'm not into divination, but I play card games quite a lot, so that would be my focus. I'd just have to decide if I do it in vectors or if I pull out the big guns and actually paint illustrations for all of them (hint: probably the former).