Lord forbid we slow the fuck down and flesh out the story a little. Oda rushing the developments was the main problem with the last two arcs.
There were too many problems with Fishman Island to focus on one. I agree with you on this chapter though. While it wasn't the most exciting, it was still pretty good and the main reason is it couldn't live up the incredible expectations the past few set for us. We need chapters like this. You can't complain about other characters not getting enough love and then when they finally get screen time, people complain. I think Oda could have added maybe 1-2 pages of something happening in the other scenarios with Sanji, Luffy or Sabo but otherwise I couldn't ask for more.
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As much as I am so hyped to see CP0 make a move. I think they left after they gave the report. Even though that's possible I want CP0 to stick around, have a coffee then see something out of the ordinary to put them into action. They also didn't notice Nico Robin so Dragon is possible.
The only possible way I don't see DD and his crew get completely obliterated by just about everybody is either Kaido's crew shows up like the last panel to help him or CP0 play some sort of role. Of course DD could run away but everything seems to point to Fujitora turning on him being only a matter of time rather if it will happen while everyone else in the island which includes too many parties to name especially when you include the ones that will turn back to humans, all against him.