Also, I'll apologize if I came off as rude, I'm just a boring, bland guy, and that's relfective in my words.
If Carrot ends up getting her character moment thanks to perospero, then my opinion of her will change.
I also apologise for the tone I used.
What exactly makes Carrot such a special character to be able to join the Strawhats? Especially when she's barely had any actual presence in the Wano Arc itself? 20 lines of dialogue, where most of it is one word reactions, with just one sentence...
Why Carrot is special is that she's a long term guest, but unlike every single other long term guest, she doesn't have a proper purpose for being there. All the others were travelling either because they were in an alliance like Law, or because they were trying to save their country. They all had major narratives demanding their journey with the crew. For side characters like Johnny and Yosaku, Oda barely does anything with them. Their actions in Arlong Park are utterly forgettable and they have very little panel time and then disappear from the story at the end of the arc.
Carrot had the 6th highest panel count in WCI beating half of the straw hats that were there, and only being beaten by Luffy, Sanji, Nami, Big Mom and Katakuri. She had chapters dedicated to her and was presented as much as a protagonist as the straw hats were. You can't say Johnny and Yosaku played as much of a role in Arlong Park as the straw hats. Whereas you can easily say that Carrot played as much of a role in WCI as a main character like Chopper.
In that same arc Oda dropped seeds for future Carrot plots like her understanding of the dawn and the straw hats' role, and her confrontation with Perospero. In addition, he gave Carrot tons of interactions. Again, all of this without Carrot having a personal purpose in the narrative. That's why so many think that all of this build up is working towards something and she will at some point get a spotlight on her character and that Oda hasn't just been building up Carrot as a close companion for no reason.