Quote Originally Posted by Unregistered View Post
PoC starts out giving you about one blueprint per 6 oil and then steadily gives worse and worse returns. By the time you start seeing bosses you're spending 35 oil per blueprint, at which point you may as well be using the oil at the factory as far as blueprints are concerned. Mid tier core and candy rewards for PoC... exist? It's hard to justify spending the time and oil on them though. Maybe it's better returns at high levels but by where I'm standing it's pretty bad.
While I agree that there is the common cost of oil, there also are things that you simply have to do regardless of their oil efficiency if you want to get anywhere in this game. I don't know where you are vis a vis H-unlocks/upgrade points and 5* acquisitions, but I really rely on those 11 PoC candies every two days. I have four 5*s still waiting to get stories unlocked, all the 4*s except Tabby and Rena, and even one 4* currently without stories that I would really like to upgrade someday. Therefore I will continue to run 30+ PoC maps each cycle. The cores reward from PoC is also necessary for the long run...if you're concerned enough about cores to avoid building Nekos (a position with which I agree) you should probably also be concerned enough about cores to maximize your intake of them without worrying about how much oil it will cost to get them.

Oil efficiency is fine for as far as it goes, but at some point volume takes a higher precedence.