Treasure keys, are stupid. It's just another thing to tediously grind, and it's ruining PoE. I've seen many posts now complaining about how little you are rewarded for competing in PoE compared to something like ToO, which is far more rewarding. The finger of blame is pointing towards these keys. Who thought it was a good idea to have to have these things to open the large chest at the end of PoE?! It's a bad idea, a very bad idea. You shouldn't need to use a scarce currency to obtain your reward after doing an hour or so of PoE. Do you see this kind of thing in ToO? No, of course you don't, and that's why ToO is more rewarding and better to play right now! From what I hear, on lower levels, the queens weapons aren't even worth the expense. Apologies for the rant, but it's a stupid ass idea to need to have keys to obtain rewards that are rightfully yours. The fact that you can only carry a handfull of keys at one time is dumb as well. EDIT: don't worry guys, looks like Bungie's made it much easier to obtain more keys in this new update. I still think it's a bad mechanic, but for now, at least the grind won't be as severe.