Why was pre timeskip good? Very simple . Our heroes knew what defeat feeling was. Except versus fights , our heroes had other attributes that would make a huge impact on the arc . They were all doing their best, within the framework of the character.
The most epic scenes for me have never been one-on-one fights.
(Thriller Bark Zoro , Skypiea Sanji , Punk Hazard Nami and Chopper , Dressrosa Usopp were most epic scenes. )
However , Oda started bullshit writing from a certain point . every writer can write badat sometime . But these are not majors.
The first big bullshit was that Aces devil fruit. No explanation. No one knows where this came from. We killed Ace, the fans were very upset. Let me at least do Ace 2.0. By the way, when we go to island, Ace visited here beforehand.
The second biggest nonsense has also come. Chopper's secret cure.
Since Chopper has such power, the first person to need to be rooftop is Chopper. Kaido knocked Luffy down. Give Lffy a pill to continue.
Moreover , it is not possible to understand the intelligence levels of these zorofans. They think that we don't care nothing if Zoro comes back and cutting something. just inquire how is it possible ?
The Oda became a lousy writer.
Because he started listening to fans too much. The drop in sales is no coincidence.