Imo it would’ve been best to merge the warlords and Emperors better:
1. Replace big mom with Boa. She’s already called the Pirate Empress and make the kuja a serious yonko crew built on the kuja
2. Only have 4 warlords:
Crocodile
Mihawk
Doffy
Kuma
3. Replace Kuma with Buggy post Marineford
4. Make Jinbe a full blown allied captain of Whitebeard
5. Write out Moriah completely
1. Replace big mom with Boa. She’s already called the Pirate Empress and make the kuja a serious yonko crew built on the kuja
2. Only have 4 warlords:
Crocodile
Mihawk
Doffy
Kuma
3. Replace Kuma with Buggy post Marineford
4. Make Jinbe a full blown allied captain of Whitebeard
5. Write out Moriah completely