I actually saw a semi interesting crack theory a while back that also drew comparisons between Doffy's executives and the Gorosei
Basically, counting Corazon, Doffy had 5 chief executives. Corazon betrayed him.
Imu has the five Gorosei.... And we know that Oda loved the traitor plotlines post time skip. Viola, Bege, X Drake, that Vegapunk clone, etc
Obviously it's too early to tell if the Gorosei will be given characteristics that separate them, but it's an interesting thought
@rerere