Oh shit ima genius x2
Blackbeard like xebec wants to be king of the world
Imu the current unknown king is the head of the world government. The world government's 3 main strongholds being enies lobby, impel down, and marineford
An ex cipher pol agent joining and them being his top 3 would mirror imu the current king
Technically tho they're still missing someone to represent the warlords. They have moria locked up but with him being way out of his prime and just him hating blackbeard i doubt it. Itd be an interesting twist if he did for some reason choose to join. I do still either him or his seraphim using all of the other seraphims shadows would be badass as hell
Doubt weevil will join but itd also be an interesting twist