Well, let's get into it.
- Great villain that I enjoyed a lot (unlike irritating Big Mom and Kaido.
- Indeed complex storytelling (for shonen manga of course) involving: Marians, Pairets, Revolutionaries, Countries, CPO.
- A lot of fights to keep the audience entertained: fights in Coliseum involving Luffy and 100s of other characters, Law vs Doflamingo, Law vs Fujitora, Zoro vs Pica, Franky vs senior pink, Ussop vs Shuger, all the grand fleet vs Doflamingo family, the list goes on. I mean come on, Sobo vs Fujitora🤗.
- Great cost of characters from Admiral to future grand fleet members.
- Creation of grand fleet (the most important thing that happened in post timskip.
- Ussop awakening haki
- Good side characters like: king Riku and all his family.
- Good emotional story about fother and daughter
- Sabo eating Ace's DF.
- Sabo defeating Jesus Borges.
- Finding out Law secret DF ability
- Finding out about the treasure Mary Geoise
- Luffy using gear 4th first time
- The list goes on and on
I'll give you the first bullet. Everyone loves Doflamingo (or at least should love him) more than most villains in this series. Everything else you mention, nearly everything, has been a center of complaints during that arc. Lets go down the list shall we?
- Its not more complex than anything WCI (which had CP-0, royalty, betrayal, Germa, etc all involved in its plot) or Wano (350 chapter samurai plotline, Marine infiltration, Rocks plot, Wano's original purpose in isolation, etc) have achieved with their plots. In fact, Dressrosa was highly criticized for BIRD CAGE and spending way too much time on Luffy vs. Pirates over Ace's fruit. Its also been criticized for putting way too much in its one arc (Green Bit, CP-0, SHF, Ace's fruit with a Tournament, Burgess, Sabo, Fujitora, Kanjuro etc etc etc) . There is a difference between "complexity" and "combining 40 different ideas" in one arc.
-Some people disliked that this occurred over removing half the strawhats. You can argue with those people.
- Not sure I get this point. Yes, a new admiral was introduced and the SHF was a factor this arc. You are just saying you like these characters over the Scabbards and the Supernova for Wano? Because thats what it sounds like you are saying.
- Like i mentioned above....
- Sure. It was a good chapter out of a 100 other ones, as many people would say.
- People question the validity of this statement lol
- People will also question the validity of this statement.
- Sabo eating Ace's fruit was great, I agree.
- Sure? Still didn't really achieve anything.
- Ok, it did nothing for the story (yet).
- Has done nothing for the story except give more questions, how is this any better than the Reverie or Wano questions?
- As opposed to him using it the 2nd or 3rd time? Sure. Even though Snake man is infinitely a cooler transformation imo. You can thank WCI for that one.
The point im making, is all of this is personal opinion about what YOU LIKED about DR lol. None of this points to why WCI or Wano are worse arcs with pure stated fact. Writing is similar between all 3 arcs. Pacing is also similar. Focus on secondary characters is definitely similar. These are facts, not opinions, because you can be shown examples of this between each.