The higher rates on Nutaku dont really concern me, since I decided to not spend on Nutaku anymore (unless its something like another black friday deal or similar).
Also - the thing, the one love and hate feeling each of us have with these Gacha games is exactly that > Gacha.
It will piss you off hundred times, but then when that one times you finally strike Gold (Rainbow in this case ) you will cherish it much more than if you shelved out money and just bought it like a loaf of bread in the 24/7 store. :P

Also I really want this event to be gone already, currently I have nothing to do in the game honestly. Farming whaleship is pointless since I dont have anyone to equip that powerful equipment onto since my 6* lack the inventory slots, and my 5* with all slots usually have their own event equipment. Only Nadeshiko has 3 slots opened from dupe roles, but she still needs one more if she ever should get the WS equip.

Dont really care about the perma re-issue events, and cant even do manyus since I mass upgraded a bunch of girls and now I am short on gold

So yeah kinda stuck waiting for the new event and just doing the "Mirror Fights" to get some equipment evolution stones in the meantime.