User blog comment:Shinhwalee/Major Event Preparation Guide for Admirals/@comment-26988710-20150417212220

This guide is making me wonder if I should bother getting Hiryuu up to K2...

Her main selling point is her Firepower, which is a massive pain to modernize for CVs (damned base 0 stat), and doesn't seem very useful anyway when Air Superiority is the main job of a carrier. You even say outright that the main reason to K2 her is just for her planes, and the bauxite I would spend grinding her would probably be better spent rolling for more Reppuus/Shidens.