Shanks could part the skies by himself. WB is a filler character and he dilutes the story.
The Hokage goal should have been dropped at the Cunnin exam. It was fine at the start of the story but once people are dying, Naruto's goal of becoming Hokage becomes too selfish. Shikamaru was the only character that demonstrated mental strategy so I was okay with only him being promoted.
I think that Naruto wanted to be recognized only. Becoming Hokage was his means to do it, but I feel that he just wanted to be loved. I guess that he achieved it by Pain's invasion arc, so the dream doesn't really make sense, I agree (specially when he doesn't even like the job, at least according to some of the Boruto clips I saw).
Well, my point is that Shikamaru's strategy against Temari was basically the same of Naruto against Neji: keep the distance, distract the foe using decoys, then take the opponent by surprise. Okay, Naruto actually took a lot of damage, but it was inevitable in his case, since he didn't know the full extent of Neji's abilities. And, as I said before, some of his strategies have some flaws (although it's Kishimoto's fault).
They don't blend together. Revolutionizes want to change the beliefs of the population. Meanwhile Luffy is more of an anarchist or even authoritarian since his justification for all his actions is his fists.
They don't have the same ideals, but they aren't enemies either. That's how I see it.
I'm fine with Sterotypes (norms) like in G Gundam but the OP world doesn't feel realistic. it feels completely fake. Like I don't see how living under Blackbeard or Donflamanigo is bad enough that it would justify people giving up their lifespawn to Big Meme as protection money. Alternatively, the Navy/Marines/World Govt./Admirals/Gorosoi/Holy Knights/Imu? can destroy any Island but they allow all these Islands to be ruled by warloads and yonkos. The worldbuilding makes 0 sense, even worse than Naruto.
There are other problems. I'm rereading Little Garden and Luffy mocks the giants for caring about the will of Gods. Or the Baroque Works crew, including Mr.0, wanting to remain anonymous when it seems like taking over Islands is the norm in this world.
About the idea of living in a Yonko's territory, I understand your point. But I think that they simply have no choice, I guess... better live with a reduced lifespan than die in poverty/war/pillaging. Remember the places where Amande, Randolph and Diesel got the ingredients for Big Mom's cake? Yeah, they resisted Big Mom and were decimated. The New World is a drastic sea too, so moving may not be a viable option for most of those people. The WG can destroy any island, but that would be one less tax payer for them too. In addition, apparently they only had access to Mother Flame recently (Lulusia was the "guinea pig"), so it wasn't always like that.
About your last paragraph, I didn't really understand your points. As far as I remember, Luffy didn't mock Dorry's beliefs, he seriously questioned his reasons for continuing his duel after eating Mr. 5's explosives. Crocodile's goal was taking Arabasta (and thus get Pluton, at least as he thought so), so it seems obvious to me that he couldn't just kill everyone all by himself in broad daylight. Unlike DoFlamingo, he had no claim to the throne or didn't have anything to blackmail the WG (and even DoFlamingo used dirty tricks to get Dressrosa's throne). I don't see the problem in the passages mentioned.