@myrdin I have to disagree with Snow Drop as 'suck' like you said. She's invaluable assets in debuff team with her 60% atk boost from turn 3 onward. It might not be overpower ability like these new powercreeped girls but for debuff team they will definitely last at least 7-8 turns even against strongest boss.
About new girls... well let just say power creep is real. Future event might be so hard it make Nidhogg a newborn.