When does CG fall, if they're supposed to replace the WG? When does Mihawk play his role as Zoro's endgame match up?
How can Shanks reveal his ties to Mariejois, Garling, and God Valley, if he dies by BB's hand before Laughtale?
When do the Revos play their hand? When do we get the activation of all Ancient Weapons?
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IMO, these following chapters, with VP's reveal, will already jumpstart a series of riots and revolutions all throughout the WG, slowly diminishing the WG's influence and strength.
The SHs will be tailed by Marines to the next island, whatever this may be, and we'll get the Void Century lore before Laughtale--the OP won't give the SHs intel about what happened to the AK (at least not entirely), but will give them the means to remake the AK.
That's what the war WB talked about will deal with: what kind of world to create next.
On one hand you'll have BB, having replaced Imu as King of the World, this time out in the open, no longer a secret, wanting a Darwinian, anarchic-like society, where the strong get everything they want. On the other hand, you'll get the good nations, led by Alabasta's Vivi, who want a world united by peace. Luffy will both defeat BB and give Vivi's side the OP with which to bring back the level of technological advancement and the eco-sensitive bullshit the AK reached before its collapse.
Luffy is not a political leader, nor does he care about the weapons. He'll only obtain the means and know-how for the future 20 kings to remake the world as one, once BB is forever dealt with, long past Imu's fall.