Lots of strong characters. Applies to Monet and Momonosuke.>She is Unique.
Applies to Monet/Momonosuke/KInemon/Caribou>Her love of adventure and bonds.
Momonosuke wants to fulfill his fathers failed goal. Momonosuke has bonded with every member of the crew. Monet is constantly reading about the stars and moons.>temporary crew like Kinemon/Momo.
Kinemon and Momonosuke have been adventuring with the strawhats for substantially longer than with Carrot. Momonosuke has specific reason to go to Raftel even beyond Carrot's 'for the lulz.' reason. Monet will suddenly appear, alive with Doflamingo in his return.
Robin saved Luffy's life when he first encountered Crocodile. Carrot tried to kill Zoro.
Momonosuke is too young to run Wano, but going to raftel and fulfilling his father's will will mature him.
the thing about women joining second is numbers theory tier delusion. Same with the literal number theory stuff about "3 arcs later" and such.>not the central figure
Nami was. Robin was. Monet was for punk hazard and Momonosuke STILL is for Raftel.>the ship's lookout
They don't need this they've made it far through the grand line without such a lame non contributor. An astronomer would have a telescope for extreme long range viewing and also be able to help the strawhats if they needs to jump to a moon.