Since the subject is about the Shichibukais now, i'd talk about an old theory of mine:
1- Origin of the seven warlords: they are based on the 7 heroes of from the 1993 Japanese game Romancing SaGa 2
https://saga.fandom.com/wiki/The_Seven_Heroes
2- Among those 7 heroes, you'd notice:
- Noel: A master swordsman who always keeps his word. Noel is very powerful, with a strict code of honor, chivalry, and loyalty. If Rocbouquet is defeated before he is fought, however, he becomes completely unwilling to compromise, and becomes unrelenting in combat.
- Rocbouquet: The only female of the seven, she is the most human-looking of the group. She loves controlling men to do her bidding and controls all the men in the Jungle villages. While there, she aspires to know the secret of a nearby temple. Her Temptation skill charms all male party members. She is also the
sister of Lord Noel.
Does it remind you of someone? Yes Mihawk and Hancock. I wonder if Oda will go that route