Some things ive taken notice to:
- Yamato 100% is leaving with Luffy. The dialogue already is making that very clear.
- There is no wedding announcement. This either means BM will betray Kaido or Yamato is actually their child.
-Orochi definitely isn't dead, either via his power or Kanjuro's. Maybe even Fukurokuju's. I think his will make Orochi that much better of a character
- it's strongly hinted now that final battles will probably take place at the Flower capital. Oda wouldn't have Kaido discuss changing the Flower Capital to his new castle if it didn't mean we were going to see it.
- if there is a small timeskip it also allows other Rocks members to arrive here.
- I'm still sort of nervous Kaido/BM might leave Wano to look for Ancient Weapons before the Arcs end, since now that much is confirmed. If there still somehow is an Ace, this is extremely possible because Luffy could fight that person this arc, while the Rocks plot continues.