Key Fragment Drops
Personally, I feel like the key fragment drop rate is way too low. Right now, I've got 5 chests and only 2 key fragments sitting in my inventory. I know that key fragment drop rate decreases with each drop and resets every month, but so far, this month I've only gotten 1 key fragment. Now, I also know that playing in a party with friends will increase the drop rate for key fragments but, I usually don't have anyone to party with. It might be better to guarantee a key drop each win but to require more fragments to craft a key, like maybe instead of only 3 fragments, you would need 5, or 10.