I'mma also quickly debunk the "Egghead Incident could be anything" nonsense too:
"....The world never saw coming."
Straw Hat Pirate crew loses? So a yonko crew loses. Never saw coming? Nope. Already happened. A lot. Big Mom + Big Mom Pirates. Kaido + Beast Pirates. Whitebeard + Whitebeard pirates. Loads of Yonkos and Yonko crews have fell within years and even months in universe. Nothing about that is something "the world never saw coming". Also stupid to think Oda would do that when his going on about how One Piece is really close to finished 24/7,
Kizaru loses/dies? So a admiral lost. Never saw coming? Nope. Already happened. Aokiji lost to Akainu. 2 admirals fought each other on Mari Jois (Green Bull and Fujitora). Everybody saw Whitebeard and the admirals in Marineford too.
Kizaru switches sides/betrays Saturn? Nope. Already happened. With Aokiji + BB pirates.
Destructions of Egghead - Mfers acting like that would generate this type of shock on the world, lmfao. Nope anyway. Already happened. Punk Hazard which was reduced to a wasteland and completely destroyed? Lalusia? God Valley? Ohara? Heck, even Dresrosa was pretty messed up.
What could inflict a shock that the world never expected to happen? Hmmmm.....? Lets see......Fall of 1 of the 5 highest publicly known authorities in the world? Never been recorded in history? Check.....Something totally unexpected when even the dudes under them (the celestial dragons like Charlos) are treated as gods? (the fall of one of the gods of the gods?) Check.....
Next low IQ take: "Kizaru MaJoR AnTaGoNiSt"
Oda most likely didn't showcase Kizarus Logia awakening against Luffy because his saving it to be used against Zoro/Sanji/other Straw Hats. AKA Kizaru was not Luffys main opponent this arc. Just like Lucci. Just like Seraphim. Oda stated that the DF myteries would be revealed the day Vegapunk appeared. One of the biggest DF mysteries is Logia awakening. No reason not to reveal in what is basically the DF arc (or the closest to it). In either case Luffy fought and pretty defeated either straight up KO, Paralysis or imprisonment Lucci, S-Bear, Kizaru in Egghead already. Brain dead to think Saturn is going so far. The reason why the fights were quick and succinct was because none of them were his big fight of the arc. These 3 fights he has had so far are literally just a call back to this:
Kizaru-Himself
Sentomarou-Defeated Lucci, who wrecked Sentomarou in front of him.
Kuma-S bear
Kizaru from the looks of it is getting saved to be the big fight for Zoro/Sanji/possibly a few other straw hats with light gloves and be made a payback from Sabody where they all got wrecked. Luffy just got it first because his just Him. But his main fight and the shocking incident is Saturn.