I agree, One Piece is the perfect series for a long RPG...only problem is that the series is still going, so they'd either have to make up an ending or end on a cliffhanger.
But yeah, once the series is over with they need to go all out and make an
epic RPG.
A Persona style or Final Fantasy style game could work.
Anot her dope way could be if they made one in the vein of the "Tales" game, like Tales of Vesperia, big, open world, where the battles are random encounters. Bunch of exploration and crazy shyt to find and you can pilot the Merry to get from island to island
Yeah somethin along those lines.
One piece is an adventure series unlike Naruto/DB which are action first series.
Games like Storm and Xeno work for them cause everyone follows mechanics of what it takes to fight in those verses.
Same cant be said for OP which has differing Mechanics depending on what the Organization/country/crew etc is
Like Cp 9- DB Like mechanics(flying, powerlevels/douriki and projectiles)
Enel and priest- relied on ordeals and traps and use of environment
Moriah and crew- DFs, use of zombies
Yall get the picture
Idk much about games but i know when it comes to fighting games u need to have characters all follow the same basic rules
Hence why every Tekken character has no superpowers and just there martial art with a few outliers.
Or MK where everyone has powers and ability to send projectiles.
It wont work as a fighting game but as an RPG going to Country/island/landmass to Country/island/landmass would work