The Ancient Robot is awakening due to Luffy's powers.
Would it be too crazy to assume that, hundreds of years ago, when it climbed the Red Line and attacked Mariejois, it was powered by the Drums of Liberation too?
I know I know - the Gorosei said the Devil Fruit had not been awakened for 800 years - but that's as far as they know. They wouldn't have known about Luffy's awakening if not for CP0 agents at the scene (at least not immediately).
Could it be that it got awakened hundreds of years ago, but the user didn't have the means to fight the WG and died (in a fight or the fated shonen illness)?
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Other than that, Bonney having ultimate authority over the Pacifista is a nice touch. Thankfully it's only for the Pacifista and not Seraphim, that would be overkill.
The Giants being the party coming to Egghead is out of left field. However we can count it as Shanks coming since they're his allies. Which means the next arc is the fated Shanks and Luffy meet up...
I wonder how Luffy's awakening will play into the Giants' lore. Maybe they have ancient scrolls about Nika amd his powers that will help Luffy eliminate some drawbacks.