Like imagine that instead of governments our world was controlled by crime syndicates headed by brutal crime lords similar to the Yonko and each one of them controls a chunk of the world.
One of them controls the entirety of Asia, another one controls Europe and the two Americas, one controls Russia and the former Soviet states and one controls Africa and they rule like emperors while installing puppet governments in the countries of the areas they controls who pay tribute money in exchange for protection.
I think such a world would be more interesting than the real one
Members of the syndicate can use haki and devil fruits so weapons like tanks, aircrafts and rockets wouldn’t do shit to them