I was at 61 hearts by spending a bunch of kobans on her. (you actually win way more hearts for girls with fewer battles if you spend kobans on combativity.) but then in my next victory, I got 100 hearts in one go bringing me to 161 rewarding me 61 130affection gifts...
Old System - extremely low rates for girl drop but the rates increase over number of battles basically you could get all new world girls before the next world starts.
New System - Visual tracking of progress with flat extremely low rates for 100% basically world girls will take 2 new recent world maps to get with event and legendaries are only possible if bring back catch up event that is after LD3 but we were given a new legend so it might never come or legends are premium grind girls now.
Okay, I can understand if you didn't play that often and thus didn't get 100%, but I've used every fight point since Sara Jay became available and, with about ten hours left, I've gotten 34 points. If they brought her back and I doubled that, it still wouldn't be worth it for me to pay kobans to finish her off.
I'm enjoying the game, and I'm perfectly fine with the Ninja Sacred Lands girls being slow going (since you have an unlimited amount of time), but I'm glad I'm not the only one frustrated by this.
I do like that they changed the event Pachinko from 900 to 300, since it gives me an opportunity to get better equipment sooner even if the girls come at the same rate, which is to say 1 for every 900 kobans.