User blog comment:Kaido King of the Beasts/Chapter 908: Imminent, Imbalanced, Improbable Whims/@comment-3185063-20180615081043/@comment-29325824-20180615110800

I doubt One Piece is ever going to have a sequel series. I mean, considering how Oda tells his story, I can see him wrapping up all plot threads neatly by the end.

...But seriously, as long as OP doesn't have the same ending problems Naruto or Bleach had, then it should be fine. And this is coming from someone who liked Bleach the most when all 3 of the big three were still going strong.