banners in-game are trash, 10 multi pulls and the best thing you get were SR units. On a gacha game, gacha system is the most important, so if the gacha system is trash, then the other parts of the the game is not even worth admiring. Admit it or not, no gacha player would be really happy getting only mid rate or lower tier units on most part of the game. Its already a given that the game gives a free 10 pulls with unli reroll, but not all banners released right now and onwards are like that.