All these islands had historical significance well apart from dressrosa I might of missed something in that arc and Luffy and the strawhats liberated them and there are all kinda anti wg given will they claim to be luffys territory
Because this could be the catalyst dragon was looking for we don't know exactly how much territory he has but it could be the tipping point that over stretches the wg influence?
I've spoken before about Morgan's newspaper and the influence it had on the inhabitants of the islands and the information war in dressrosa made fujitora question the wgs real motives.
If Morgan's started telling the truth about the wg could we start seeing the start of the big end game war coming together?