Honestly, what this chapter confirms to me is why Oda kept some of the strawhats healthy. He needs it to make sense for them to be able to defend against CP-0. My guess is this will be the primary directive of Brook/Jinbe and maybe the others.
I never expected them to be involved combatively, but now it entirely seems like they will, otherwise it never truly made sense that they just up and leave (
@Bounty you were right on the money with this).
This also potentially gives characters like Brook/Jinbe more to do. I say these 2 especially because they are newer members than when Cipher Pol was fought in the past. Maybe Usopp finally gets something too?
Franky seems too far away and i can see him playing a role with Chopper. Nami I'm not so sure about.