The BB plot is finally starting to wrap up, he will probably start his plan on Marijoa very soon, in OP time, probably at the end of Elbaf arc, or the one after it, BB will make his move and most likely it will be something big.
For now he has: the road poneglyphs Law gave him, the means to read them through Pudding and that is forbthe OP race. A big exchange chip with Garp (also it is to notice Moria escaped), Lafitte is about to do something at Red port, maybe directly in Marijoa, Caribou is about to gave him infos about Shiraoshi/Poseidon (and that could actually set up a huge bomb right under Im ass), Catarina has Saturn dna as well while nobody in Marijoa knows that, and this is for Marijoa.
Aokiji position becomes more precarious as time progresses, they will eventually attack Marijoa (one way or another) and I want to see what Oda planned for him: BB ending the facade at some point and attacking him, Aokiji actually being for real and goes to Marijoa to have his revenge fight with Akainu or even other stuff?
The Barto interlude was fun in its way but the ship being blown up with those words actually set up the stage for Kidd actually being alive and coming back (it was an unsure event from the start but imo this makes the balance change in favor of Kidd actually being alive). Also nothing happened to the Barto pirates of course.
Probably Nami has just been put in a lego house of some giant. Usually it is the classical doll house but Oda put a bit of originality making it a lego house, kudos.