We are at the precipice. While I assume Kid isnt done in the series (he'll be a major ally in the endgame), but its time Oda starts dropping major characters.
My hope if that Aokiji is arriving, he and Kizaru fall (maybe Saturn as well) after their relevant plotlines are explored. This way Blackbeard potentially is next due to the Fullalead incident with Koby.
Its time for things and characters to end their relevancy, otherwise Oda is never finishing this manga