Katakuri is coming back to the story
Although Katakuri has been absent from the spotlight for quite some time, the excitement among fans for his potential comeback in One Piece is steadily building. Numerous theories speculate on the possible ways Katakuri could re-enter the storyline.
The prevailing belief is that his return might be imminent due to the recent kidnapping of Pudding. Given Katakuri’s protective personality, it’s inconceivable that he would simply stand by and allow his sister to be taken without taking action. I think that Katakuri is coming back to the story as the new Captain of the Big Mom Pirates since Charlotte Linlin got taken down.
So Pudding was kidnapped by the Blackbeard Pirates (Kuzan), and most Straw Hats have found their match-ups with the Blackbeard Pirates (Luffy vs Blackbeard, Zoro vs Shiryu, Usopp vs Van Augur, etc.). But Kuzan doesn’t really have a match-up, so it would make sense for him to be taken out earlier, also with the addition of Garp getting “killed” by Kuzan then Luffy wouldn’t just sit in his place knowing how powerful he is.
Also I don’t think Sanji would let that slide. So I can see Katakuri returning to the story in this way becoming ally with the Straw Hats to take Kuzan down and get back his sister.