It's a shame that at the beginning of one piece the work portrays sailors very poorly and the Arlong arc will form the minds of many about the newts up to the Sabaody Arc, until then the newts are 'evil' beings, and the Navy only gets one True highlight with Smoke in Alabasta where he focuses on the biggest threat (Crocodile) and sets aside or even works with Luffy to defeat him. As for the pirates Roger I don't see much about it, Roger probably won't even care and a good part of the crew won't either, there will be some hot heads between them but overall it shouldn't be anything serious, if Rouge talks to Roger about Rob I'm wonder what would happen. thanks for the chapter
I have a theory about the blank century. I can't be sure if Shanks knows or not, but at the very least he'd have his suspicions about Imu's existence or rather someone hiding behind the scenes. What I'm curious about is what purpose do the World Nobles serve at this point. Any other world power would have stopped serving them at this point, it's possible that each of the noble families act as keys or guards for something. They're probably in possession of Uranus, holding the world hostage for centuries. If the world knew that the Nobles had a knife to everyone's throats the planet would declare war on them and the Admirals would pass the information on in order to contain it. I have no doubt that the Perpetual Youth Surgery was used on Imu. All of this is my best guess as to the secret that would "start a war that would consume the world in one day" that Whitebeard was talking about, the moment that happens the navy would split in two and they would hunt the Nobles down like dogs out of fear.