they worked mostly for whales. I mean , i have no problem with being unable to get all the cards in the game...but changing the slayer cards mid event (because some free players used their free event tickets for that hoping it will help a bit in their event, only to realize the cards changed) ...taking out akie , making an event rewards imposible no matter how hard u try , that screwed free players really bad. I mean , sure i agree with payed gacha limited SR , and extra slayer cards to give an edge to paying people (which is normal , since they payed for them) , but making an event reward impossible , no matter how much time you put in a game.....seems a bit like a spit in the face. I don't wanna sound like a whiner , but i hope they won't repeat the same mistakes next event