Holy shit, what a chapter!!!
I'm glad we get to see more of Reverie in these next chapters, it's gonna be a nice change of pace + building up the hype for the next part of the arc (after Wano).
I agree with my fellow folks that Sabo isn't dead, it can't be due to plot reasons. Makes no sense to revive him, get him his deceased brother's DF and kill him off some arcs after. My bet in also in the framing of killing Cobra, which I will adress in a second.
The framing part wasn't due to the Marines, this is certain. I believe Morgan was the one doing the framing, seeing how he spoke about himself after whooping the government fodder. He lies to benefit and sell. Revolutionaries killing Kings sells like crazy.
As for why I think Cobra is dead, it's simple. It's a plot to make Vivi the next and last straw hat. Why I think that you can adress me by tag in the
Next Nakama Thread since it isn't a discussion for here.
The Shichibukai abolition was something we already knew it was coming, however I didn't expect it would happen so soon, to be honest. But if we analyze it properly it makes sense to be abolished in Reverie since it's a meeting of 50 kingdoms and two kingdoms had a Shichibukai station there and destroy everything. The other Kings would be alerted and wanted the abolishing to happen due to that.
Finalizing with why I think Cobra died besides that, it's because of Wapol, who clearly would benefit and also gain sort of revenge upon this event. Wapol is salty that he was kicked out by BB and after his arrival was kicked out AGAIN by none other than Luffy and Vivi. He wouldn't let Vivi go after what happened in Drum Island, so I believe he stirred up something to make the incident of Alabasta.