User blog comment:Fliu/My Thoughts on the Big Mom Assassination Operation/@comment-192.160.45.2-20170514131209/@comment-7606564-20170514145727

Considering that every (main) character's power serves a purpose in the bigger picture of the manga, I really like your idea and never considered it. Oda decided to give her poison based abilities for what? To save luffy from bad fish? What would be the significance to that? But if she brings big mom back from the brink of death, some sort of truce or alliance may be formed. That would be significant to the plot and Reiju's powers would be a critical part of that situation. Just think about like a writer and look at each players significance to the bigger picture.