Btw, I would be more inclined to believe in ZKK if Oda hadn't broken the 5v2 roof battle in order to give Zoro and Sanji the "bread and butter" King and Queen matchups. If it were Robin+Brook vs Black Maria instead of Robin vs BM while Brook was off to the side dealing with fodders, etc.
This raid has gone through so much in order to "stay in the generic shounen route", that it becomes really, REALLY hard for me to believe Oda would break it with the ZKK event.