I think Oda will, like many others before him, go back to his "roots" and give the other strawhats their rightfully owed "presence" in the story. This does not mean actual panel/screentime. A character's importance is not just drawn from one or two traits. CoC is only one of them. Right now the story centers on CoC. Early on it was random DF powers. It is the way a story, and specifically this story, One Piece, is progressing. We are in the CoC has this this and this use era so the spotlight will be on CoC users.
But when all the poneglyphs are present will Luffy, Zoro, and Sanji be insignificant because there are exactly 1 person who is able to read poneglyphs. 3 hypotheticals in Imu, Momo, and Pudding. This means only Robin will be the spotlight. Again, does that take away from Luffy's CoC? I think not.
When the ship is sailing in the middle of the ocean with 0 land around for hundreds of miles and (or km for the rest of you guys) but the uncertainty of the new world causes the mother of all typhoons to hit, how useful will CoC be then? No the main characters become Nami, Jinbe and maybe Franky.
This stuff was actually established very early on and is still true to this day. This guy said it best here:
You mean, they are continuing to perform the roles they have had on the ship since they joined? The roles Luffy more or less picked them for? What exactly is unfortunate about Sanji getting Conqueror's? He and Zoro are Luffy's main fighters, of course they should be the ones that take on the toughest enemies.
It is so true that every crew has the same basic formula of members with these basic skillsets. They may be nobodies on other people's crew but the story centers on Luffy and his band of Strawhat pirates. That said, even if they are nobodies to us, they are still pivotal to their own respective crews. Otherwise, they'd just die and another one bites the dust in Paradise or the New World. So if this is the SHPs, then Oda is NOT going to forget. Oda will NOT abandon the core strawhats. They may seem less productive this arc, maybe the previous too but their time is coming. The other issue I see is the amount of antagonizers right? How do you expect them to shine if the fight is Usopp, Franky, Nami vs 1 GK? We want 1v1s not 3v1s or even 2v1s (unless its vs the big bad like Imu). Did we all forget how Jinbe threw that water? It was quick but imagine if bro wasn't there. Maybe we need a whole 3 chapters of Jinbe water tossing to really drive home the importance but Oda decided to do that with the portrayal of how OP Imu is instead.
There is just not enough antagonizers sometimes to go around and a few SHP are going to be twiddling their thumbs but let me tell all yalls this. There is one Strawhat who is almost never twiddling their thumbs regardless if there are boss battles or not and that is Chop. Bro is MC all over the place stealing all the cute vibes and shit. Chop is always healing, regardless of battlefields or not but I guess the supporting healer is just not so important to everyone. Sanji would long be dead without Chop and so would much of the surviving raid members from Wano. Aint nobody can tell me Chop is sidelined, I can come up with an essay of shit here for just Chop. Do I need to remind everyone how we're going to start seeing a bunch more hybrid forms once Chop decides to start up his underworld pill biz? Bro got that shit on tap like Shamrock Tuesdays got beer.