Cool to see the confirmation that Drake is, in fact, the Captain of Sword, but it still makes me wonder as to who else is apart of it, and I can't help but feel that there's someone higher than Drake that brought it all together - unless this was just Drake's plan and he looked to another, older Marine for advice. Those that come to mind would be Garp, Tsuru, or even Sengoku who is connected to both of them as it's been said as well as Kuzan. It's all very interesting and cool to see Koby is in on the mix, but he's pretty young, too, so it makes you wonder if there's a definite connection to Garp.
With hope, we'll eventually get Drake's backstory in Wano as more info on Drake and his plans come out. I also wonder how Koby is going to combat Boa's ability; he's not an idiot, and with him being a Rear Admiral now, he's got to know about the Warlords - former warlords now - and what some of not all of them are capable of.
Also, Drake is hiding out in a debilitated home which sort of reminds me of where Kin'emon and the gang went to discuss stuff which was just as rundown and horrible, but it's likely that it's not the same exact location; interesting nonetheless!
While that was the most interesting part of the chapter to me, once again, Oda leaves us with more questions than answers and teases us, as well.