I like the irony of there being too many fragmented threads on the concept of a card game so a person decides to make yet another thread with the idea "this one's the real one".

But I digress.

Either way there's a lot of good ideas but some conflict with others. I'd like to see things like a card album, being able to challenge NPCs, receive random card drops from enemies and even rarer ones from NMs, could get cards from quests, and maybe a little tournament spot in Ul'dah or something.

There's a problem when it comes to the penalty of losing like in other card games in FF. Generally if you lose, you lose a card or two. A sore loser in this case might just disconnect from the game before they lose and prevent the winner from taking their card. To counter that if you dc you automatically lose a card anyway; however, problem with that is that some people have unstable connections and you never know when someone will disconnect. Therefore, none of those solutions will work.