Honestly, the One Piece live action convinces me less and less, no matter how much the authors say "eh but we put our heart in it, we know the manga, etc."
In my opinion, a big problem would also be the acting and the setting of the characters.
That is, One Piece like all shonen manga, is characterized by a very physical humor and often caused by the expressions of the characters or by the exaggerations of the characters and their characteristics (eg crying reactions in which characters scream at all lungs, perverts who palpate boobs and asses and make dirty expressions, stupid characters who are stupid, stoics who end up in absurd situations), and how do you transpose that?
If live action did, the Japanese would do everything true to the letter, and this would mean live action characters acting like manga characters.
If Westerners did it they would adapt it to their style, and so on with sarcastic jokes ...
The problem, however, remains the yield from comic to film, because doing something copied equal to the manga on screen would be ridiculous, in this case, Evolution had at least one thing right, namely the idea of making a world more plausible or realistic. exaggerated like that Dragon Ball.
That is, let's think of Goku, honestly in a possible Dragon Ball live action on screen I would prefer it to be a normal person with some references to the manga (eg muscle build or some rebellious hair) rather than an Asian punk with dyed hair .. ..
A Bulma would do as well as a normal girl with a dyed lock instead of a wig on her head.
Magu-chan low 
Kazoku Family high 
