Hmm plenty
- Bigger boobs and more fanservice
- Oda sacrifices other characters only to make Luffy look good.
- Unnecessary side characters and subplots for example Marco's note to Luffy or when Big Mom pirates came to Wano to only completely being shafted because of "plot".
- Over usage of PIS for example Queen and Big Mom
- Much longer arcs where Sabody, Amazon Lily, Impel Down, Marine Ford, Ace/Luffy flashback COMBINED took less chapters than Wano alone.
- The over usage of plot devices
- Introducing characters that are relevant to the overall story but not having them participate in anything, e.g Toki grew up in the void century than Oda decided to cast her aside to being a baby making machine for Oden
- Structure of scenes and plotline for example let's look at Kanjuro, what was the point in the scabbards fighting Kanjuro offscreen and Kanjuro being "killed" offscreen...only for the scabbards to have to confront Kanjuro a second time? That first encounter added absolutely nothing to the narrative and in fact hurt the Kanjuro plotline. Oda wasted months of tension and buildup on an offscreen encounter.
- Sheer amount of characters to such an extent that no matter what Oda does he won't be able to do justice with all characters now. Oda is trying to run a 4 hour marathon in 5 minutes, to do so he takes short cuts and progress in unnatural ways. Oda simply added too many characters and storylines, now he has no idea how to maneuver through this mess and often just leaps past all of it in attempts to just make luffy win because well.....that's what needs to happen.
- Literally hundreds of chapters used as set up.
- Retcons, for example King Baum disobeying Big Mom and yet obeyed Nami because she had Big Mom vivre card.
So much more.
- That's not a writing rule, that's an artistic choice, put on him, which results in more $$$.
- Not sure what this even means, every single character is there to help tell the story of Monkey D. Luffy. Luffy is the main focus, always has been since pre-TS, East Blue. If you something specific, we can get into it.
- I disagree with the unnecessary side characters, it builds for a grander world, which I like. All side characters have a role regardless in the overall story. Marco's note to Luffy, that wasn't useless... that simply had a change of plans because of the unexpected thing that happened with the warlords. This is legit storytelling. I agree about the BM pirates stuff, I have a dislike for it right now... but I'm waiting until the arc finishes to properly give my judgement on it since its hard to determine their role by the end of this arc.
- PIS, I agree on, however "overusage" I don't agree on. PIS at it's peak is Marineford, nothing is ever surpassing that. Or hell can go back to the PIS involved in Alabasta as well if you want. Is it an issue for me? No, long as there's some story reasoning to it.
- This is not a writing rule, longer arcs =/= bad writing lol.
- "overusage", you keep repeating this word like you've actually gone back and counted the times Oda used plot devices pre-TS. Ain't no overusage, mf is doing the same shit he did pre-TS.
- I agree with the general concept of your point, but this is also a trait of his from pre-Ts. Disagree with your example. And Toki's arc is still going on, so let's avoid prematurely judging character's relevance. However, even if she has no relevance, doesn't matter to me.. she was a minor character in Oden's flashback.
- I've already said he messed up the scabbard storyline after the Raid started and part of it has to to do with him sticking with his pre-TS writing habbits, which simply don't carry over well to the post-TS world of OP.
- Characters are not an issue for me, and something I won't judge until OP ends. Since great side characters, arc-characters are part of the reason why I read OP. "Make luffy win because that's what needs to happen"... yup been happening since Baratie or even more specifically Arlong park.
- I didn't mind the set up at all, I enjoyed the Wano set up to the raid. Soo yea.
- Pretty sure you overlooked a story point regarding King Baum as to why he disobeyed Big Mom.
But really majority of these are not objective writing rules. More expressing or explaining why you had a particular dislike regarding some events that happened. Then there were few points that had to do with writing aspects, but which you're only limiting to One Piece recently and ignoring the vast amounts of time they were issues in early stages of One Piece.