I believe they will do something like My Hero Academia or Demon Slayer, with kind like a arc per season, with 12 episodes per season, and not something like Hunter Hunter remake with episodes per chapter.
If they plan to do the whole series would be something like:
Season 1: 12 EP East Blue
Season 2: 2 EP Twin Capes, 2 EP Whiskey Peak, 2 EP Little Garden, 4 EP Drum, 2 EP early-Alabasta
Season 3: 12 EP Alabasta
Season 4 : 3 EP Jaya and 9 EP Skypiea
Season 5: 3 EP Long Ring Long Land and 9 EP W7
Season 6: 11 EP Ennies Lobby and 1EP post-Ennies Lobby
Season 7: 7 EP Thriller Bark and 6 EP Sabondy
Season 8: 4 EP Amazon Lilly and 8 EP Impel Down
Season 9: 9 EP Marineford and 3 EP post-Marineford
Season 10: 7 EP Fishman Island and 5 EP Punk Hazard
Season 11: 12 EP Dressrosa
Season 12: 2 EP Zou and 10EP WCI
Season 13: 2 EP Reverie 10EP Wano
Season 14: 12 EP Onigashima raid
Season 15: 12 EP Egghead
etc
They could make the season 24 episodes and launching it in two half, one in March one in October, and would be like 10y of content.
If they plan to do the whole series would be something like:
Season 1: 12 EP East Blue
Season 2: 2 EP Twin Capes, 2 EP Whiskey Peak, 2 EP Little Garden, 4 EP Drum, 2 EP early-Alabasta
Season 3: 12 EP Alabasta
Season 4 : 3 EP Jaya and 9 EP Skypiea
Season 5: 3 EP Long Ring Long Land and 9 EP W7
Season 6: 11 EP Ennies Lobby and 1EP post-Ennies Lobby
Season 7: 7 EP Thriller Bark and 6 EP Sabondy
Season 8: 4 EP Amazon Lilly and 8 EP Impel Down
Season 9: 9 EP Marineford and 3 EP post-Marineford
Season 10: 7 EP Fishman Island and 5 EP Punk Hazard
Season 11: 12 EP Dressrosa
Season 12: 2 EP Zou and 10EP WCI
Season 13: 2 EP Reverie 10EP Wano
Season 14: 12 EP Onigashima raid
Season 15: 12 EP Egghead
etc
They could make the season 24 episodes and launching it in two half, one in March one in October, and would be like 10y of content.
Especially East Blue and Dressrosa