User blog comment:Roman à Klef/Questions on My Mind/@comment-27930128-20170620123146/@comment-3387274-20170628105915

"Jun" is basically 98% guaranteed to be John Giant, who we've already seen. The only reason anyone is even pretending otherwise is we haven't had any official correction yet.

That said, Elbaf has been set up as an important place for ages. Ussop's wish to go there and Luffy's new allies hailing from there are just two threads leading the Straw hats there. I find it very hard to believe they won't go to Elbaf at some point. And I don't see how it being seen in a flashback is supposed to change that.

The Reverie also seems like a pretty big gun waiting to go off, but I can't tell how yet. Luffy doesn't yet have a reason to be there, for all that people supporting him will be. But I feel obliged to point out that most of the time Luffy only ever gets the reason to go to a place moments before he actually does. Saying there's no adventure at the Reverie is like setting yourself up to be proven wrong in two or three arcs time.