Paulie - Replacing Franky as the crew needed a shipwright and he was a good choice

Uta - replacing Brook shes a good singer and its not like she has anything else going on

Masked Deuce - Replacing Chopper I googled "doctors in one piece" and he was one of the only non old people that was on that list and hes alive which I kinda thought he had died in canon ngl but since he is alive and its not like the whitebeard pirates are gonna need him soon hes joining the team

Pudding - Replacing half of Robin She can read poneglyphs... maybe and if the crews gonna make it to laughtale they'll need her