Real quick about the card game.
Standard card game (playing cards) have existed for over thousand years and dwarves and gnomes are in the Witcher universe (which is an entirely different universe than our own) more advanced than normal men were in medieval time in Europe. A card game is completely plausible, especially when we've also been in contact with a lot of scientific etc. (E.g. Witcher 1) in this universe all ready which indicates that this universe is far more advanced in knowledge than our ancestors were.
Xbox one debacle
While this inherently isn't that big of a deal, I'm questioning if this Xbox exclusive could be CD RED second PR fuck up (The first one was going after pirates with court letters that backfired like burnt cow shit on a hot summer day).
First of all, this won't have any effect in game which is why I won't ridicule CD RED as being complete hypocrites. While it would be a nice to let all people who spend over 100 € on a special edition to actually get their money worth in physical content, (and not treat some consumers better than other) this won't effect anyone's experience with the actual game.
However I'll address two things (I throw in a third just for good measure), one more important than the other.
A: was the promise of treating all consumers equally only related to in game content and if that's the case this was poorly marketed.
B: (My gripe) The statement that "There's so much space we can fill the Premium edition with stuff, with the CE there's no such limit" Yea, except apparently there is. Apparently people who got the CE for PC or P4 either have a smaller CE box or more Amazon (or your equivalent other) air in them.
C: The timing, Ooh the fucking timing. Jeez CD RED! Could you time this reveal any worse? Just recently people freaked out on Tomb Raider 2 being Xbox exclusive (for x amount of time) and how two thirds (or three fourths if you count the Wii) got shorted out because of greed. And you reveal this now?
Not to mention, you reveal a new feature (mini game) in Witcher 3 and then exactly the same day you reveal things related to said prior reveal, which is only being able to one third of your consumer. If people all ready knew about Gwent the card game and then later on the line you've added them solely to Xbox if wouldn't sound as much as a giant punch in the face as it does now.
All in all it just feel shitty (and mindbogglingly stupid). The previous "CE" for the Xbox 360 already got the medallion (where as PC consumer didn't and boy, did we crave for one) and now you pull this arse where you promised both how all consumers are treated equally and how you could go nuts on giving people stuff worth their money on an awesome Collectors edition combined with arguable the worst timing ever to make this reveal.
Personally I don't really care so much in the content but more the business side of view and assuming we can expect more variations with pre-order deals in the future combined with this I'll probably cancel my CE order when Witcher 3 comes closer to release. I'll already bought it anyway on GoG.