Fix the chances of Key fragments
To be honest they really need to increase the chances of getting key fragments because I have 4 unopened chests and only 2 key fragments, I am getting more chests then I am getting key fragments and chests take a while to refill. Whenever I do get my key fragment I will probably get something wacky from the chest and then i'll have to wait another 2-3 weeks to get 3 key fragments again. It just annoys me seeing that I have 4 chests and not being able to do anything with them.