Isnt the "Dawn" a figurative way to talk about the liberation of Wano from Kaido and Orochi, and in a major scale, the opening of the borders and the fall of the WG?
I was also expecting a scene of the sun raising after the Fire Festival, but as the borders are still closed seems the time hasnt yet come, the "Dawn of the world" will happen only when Luffy finally defeat Imu.
Good that Oda moved on, more than the bounties, i'm waiting to see what happend with the Warlords, Alabasta, Teach and SSG.