User blog comment:Kaido King of the Beasts/Chapter 821: Last March of the Elephant/@comment-27158424-20160331133421/@comment-24850639-20160331142655

Not the first time I heard this, and actually one of my friends has been adamant about Momo joining ever since he was first introduced. He was convinced Momo would be a cabin boy, something like Shanks/Buggy were for Roger. Haven't talked to him about it since the early events of Dressrosa though. Things to consider:

1) Daimyo of Kuri - From what I understand, this is something like a Feudal Lord, or a Noble in midieval times. Not quite as vital as the Shogun, and he was the heir not the actual Daimyo, so its def possible for someone else to take this position, should he REALLY wanna go.

2) Backstory - Dont have it yet, but we've scratched the surface, which is more than anyone can say about Caesar or Pekoms as of now.

3) Fighting - It'd be great if Momo could hold his own right now, but the crew doesn't absolutely need that anyomore. They've grown pretty strong over the timeskip and have allies from all over the place out the wazoo, so it isn't necessary imperative that the next SH be a fighter

4) Chemistry - He's got this down pat. He already has a unique relationship with Luffy, and several other people on the crew.

5) Sense - Birthright or not, Daimyo is not a position meant for a child. Momo isn't in a position where he can as readily contribute to his country the way someone like Vivi could, so I don't think it's out of the question for him to wait to take the role at an older age (or Shogun for that matter). Therefore I could definitely see  him being the next little brother of the crew like Chopper started out. He can learn swordsmanship from Zoro, martial arts from Luffy or Sanji, use of his DF from Chopper, poneglyph reading from Robin, etc. Age and fighting ability alone should not be the only criteria when considering Momo

Likelihood is another ball game, but that's something we won't have a better idea of until the Wano arc plays out. The parallels between Luffy and Roger only continue to mount, and picking someone like Momo only adds to a very long list of similarities.