Petition to change how Key Fragments are earned.
Right now Key Frags are earned very vaguely: "Do I need to get an S" "Do I need to play a lot of games" "when do they reset"
I think there should be a sort of daily, or even weekly, challenge to EARN key frags, and it could still easily be tied to the mastery system.
Something like "Earn an S rank on three different champions today" or "Earn 5 mastery score today"
That way it ENCOURAGES players to actually play your game instead of making them think: "well no more drop for a while, might as well go play something else" because face it, most people are LOADED with chests and barely ever get to open them, unless they want to step behind the paywall to get the Keys.
I mean why encourage players to play by giving them chests on S ranks, then push them away by making them wait forever for that RNG key fragment