Yes, I know most of live action anime film sucks. Only a few pass the standards. 

Let's assume that we got a decent budget, a film crew who are passionate about One Piece, a God tier CGI (OP would be around 80% CGI to capture the OP world's quirkiness) and best director (like Taika) otherwise Goda won't allow it, and instead of the usual three to four part film, turn it into a Cinematic universe (like the MCU) - I believe that theres so much stories to tell within the OPverse that a Cinematic universe out of One Piece is possible. 

Example of movie release order (Warning: Spoilers Ahead) 

**Phase 1**

* Luffy, the King of the Pirates
* Captain Usopp! 1
* The Lost Swordsman Act 1
* Black Leg ch 1
* Strawhats: The Cat Burglar and the Fishmen
* Coby and Helmeppo

End Credits : Shanks, Garp, and Jinbei reveal

**Phase 2**

* Chopper (Xmas release date) 
* Captain Buggy!
* Princess Vivi and the Baroque Works
* Strawhat Pirates 2 : Alabasta
* Fire Fist Ace
* Strawhat Pirates 3 : Skypeia
* CP9
* Captain Usopp! 2: ~~Civil War~~
* Strawhat Pirates 4: Saving Nico Robin

End Credits: Shichibukai reveal, Blackbeard Big reveal, White beard, Enel discovering something on the moon

**Phase 3**

* Thriller Bark (Halloween Film) 
* Brook solo film
* The Supernovas
* Captain Buggy! 2/ Impel Down
* Marineford War
* Franky solo film
* Strawhat Pirates 5 : The Return of the Strawhat Pirates
* Jinbei solo film

End credits: Strawhat separation, Magellan shitting, Buggy being part of Roger's Crew Big reveal, Luffy training, Luffy declaring war against Big Mom

**Phase 4**

* Law solo film
* Sabo solo film
* The Strawhat Grand Fleet 1/God Usopp!/ Law 2
* Black Leg ch 2
* The Reverie
* Strawhat Pirates 6 pt 1: Into the Wanokuni

End credits: Doflamingo , Jinbei reaching Big mom, Sanji's identity being revealed by Bege, Im-Sama, Kid in prison, Kaido

[Spoiler] One Piece Live Action - As a Cinematic Universe