-Black Maria vs Robin was a good fight, in the classic OP way.
-Ulti and P1 i didnt care too much, i'm ok with theirs defeat, but i think they will get a cover story after Wano. They are very charismatic side characters.
-Jack one for me was ok also, he got development in Zou already, them the fight in the rooftop, and finally a final fight against a Mink, his defeat feel very natural too me, and the Peros defeat together give the feel that the high ups of the Emperors side are finally falling
WsW and Sasakj were the ones i find Very strange, the fights could have more panel time before, like when the gifters started to attack Jinbei and Franky and in the next page Tama already solve the problem. Oda could give a chapter of Franky and Jinbei struggling against WsW, Sasaki and the gifters and just in the next chapter save them, with one chapter he could had give more to those fights. And there's also some plot points in the two F6 that are missing.
Sasaki seems like a fishman, he wear a similar cap to Kokoro and have green hair, he could very well be Kokoto son and Chimney father, and that would give more development for the fight against Franky.
WsW have this CP9 plotline, the Gomu Gomu one and the Nika one, but seems kind of from nowhere. Pehaps the missing CP0 guy will go kill him and we will get little more info on those subjects if they interact.