Hello people! long time lurker, but this is my first post
Anyway, I don't think I saw this anywhere, so here is my input on the possible meaning of One World
Historically, after WWII and at the beginning of the Cold War, there was a famous book written by Wendell Willkie called "One World". This is peculiar that they share the same name. And in face, a lot of what people seem to want can be hinted at by looking at what this book is about.
"One World" is basically about America not necessarily imposing their own politics on other nations during the Cold War, but letting nations that were devastated by WWII set up their own stable political systems, independent of the US, so they can fend off the Soviets (alert me if I am wrong, that is the impression I get from it). Once nations can adequately defend themselves from any superpower, they can all band together and become One World made of separate, free nations.
It also does support imperialism, in the sense of pre-WWII levels. Willkie basically states that the kind of government is unimportant to the freedoms it can bring, and imperialism can bring out these rights in the nations. Yet mainly securing natural human rights in these nations works as well. He then goes on, like I said, to claim that some sort of world coalition of power is necessary to keep this balance.
From this I can draw improvements in Diplomacy, as well as various influences in types of government/spheres of influence coming in the next expansion. Possibly the return of specific types of ruling styles (as the basis of One World was to allow nations to use their own political systems), and even colonies. Maybe the connection with this book is pure coincidence and means nothing, but I think that what the game is lacking fits very well into the themes in this book.
I thought this was worth pointing out. And I didn't read the book, but I have read books about the history around the book (if that makes sense), so my thoughts could be wrong. And I tried to look for this throughout the forum, but I possibly skipped over it, so I'm sorry if this is a repeat idea ._.