I thought the randomization felt hinky (and more than a little greedy).
Unfortunately though, my missing card list is nearly identical (I am missing the exact same cards + 5 more) with the same recent additions others are noting [suddenly appearing in my last several chests, and in large numbers]. I've opened around 100 chests (many of them purchased). Personally, I find the correlation infuriating and will be submitting a formal complaint with the App Store unless I hear something appropriate is being done to fix this "issue."
Selling content or functionality through IAP when it does not exist is considered fraudulent misrepresentation, which violates their developer agreements with Apple and Google (at the least). If they were selling this as clearly stated pre-order content (which we get upon completion without further purchase), that would be one thing. However this is presented as goods that are available now, given a percentage chance (greater than 0%), which they clearly are not given the pattern of missing cards displayed here (which are of all rarity classifications, and not just of an extreme rarity class). If they add the cards later, they won't magically appear in my collection. I will need to spend more money [than I already have] and that is unacceptable.
If this was a mistake and some of these 'common' cards are mis-labeled, or this is some fantastical coincidence, then fine, your rarity system is lame and shame on me for thinking it would be any less sucky than any other rarity based random card draw system. However, I bet if I bought 1000 more chests my list of missing cards would look the same as we're all seeing.
This whole thing is unfortunate, because I love the game (real version and virtual)... but this is really leaving a sour taste in my mouth.
