Seems like an interesting idea, however without a "classic" CCG understanding, and an RPG approach to it, this will end as a self-serving novelty.
You won't be able to play a game of poker, if you are missing two queens, or even one four of diamonds for that matter. So classic gaming is basically out of the picture, unless full pack of 52 cards is ready, set and available to buy. Thus making the "trading" part, completely pointless...
It seems you also lack the idea for rpg mechanics as well. Where the initial idea was aiming at being a form of rpgccg, or at least that's my reception of it, here we are facing normal, rather fixed poker deck. If I can have any input to this, I would suggest to use some pre-made CCG engine, and turn this in to online forum game, with some form of cryptocurrency based betting system. Tremendous amount of work so its rather a thing of fantasy, nevertheless good luck.