Random thought, but I still have trouble seeing how Oda will end this series anytime soon lol:
- You have currently relevant characters and their groups (Kizaru, 1 Gorosei, Kuma, Vegapunk, Kuzan, Garp, BB and Shanks)
- You have 3 enigmatic characters that seem to stand at the worlds greatest "mysteries" or intrigue (Im, Rocks, now the Burned Scar Man if he's not Rocks)
- You have barely addressed characters like Kong, rest of the Gorosei, Dragon, Sengoku, etc
- You have teased characters like Silver Axe, Ochoku, Scopper and Shiki
- You have barely addressed groups and their rulers like the Underworld Kings (Umit, Peclo, Giberson), CP0 (what even is there heirarchy), SWORD (though we are getting that now) and Revolutionary commanders (beyond their reveals)
- You have teased groups like the Level 6 Silver Medalists that escaped after BB broke out his new crewmates
- You have former villains (CG sans Mihawk, Moria, Doflamingo, Magellan, etc) that seem to still have roles in the story
- You have unknown groups like the "God's Knights" mentioned a while ago that seem to work for Im/Gorosei
- You have a plethora of King/Queen designs that seem to be gearing towards being present during the Final War.
Oh and just any other character i havent mentioned (Weevil, Boa, Rayleigh, Fuji, Akainu, Ryokugyuu, etc etc).
Lol, either this series is never ending or it will take over another decade.