I've just been proposing the question of: what if the lack of Carrot has been all made to establish the same stowaway gag a 4th time lol? There's precedent for it already. That's all I'm really saying.
Sure, we can argue about uniqueness or relevancy, but those have nothing to really do with what has been established on the page. She was a major character during WCI along with Jinbe. In Wano, while less relevant, she ironically has more impactful scenes than Usopp in terms of action sequences. Like think about that lol, a strawhat was given less to work with basically (no double spreads).