All kidding aside, there's really only one sure thing that would happen if the the WTS's "New System" actually came to pass (I've said it many times before, but the occasional reminder is, IMO, always a useful thing)...
...WT representatives have stated explicitly in the Society's own publications and from the platform that the Org intends to - for all intents and purposes - function as the legitimate (and only) government in said New System, with the Warwick compound serving as the de facto world capital.
Seriously*.
Now, imagine the Org being given control of a small country tomorrow.
I guaran-fucking-tee you that in within a decade, travel outside the country would be severely restricted, democracy and free speech would be nonexistent, advances in science and medicine would grind to a halt, all foreign entertainment would be banned, creationism would be mandated in schools, any form of alternative sexual expression (even between straight married couples) would be outlawed, taxes mandatory donations would be ridonkulously high, disfellowshipped individuals would be imprisoned or deported, and "apostates" would be sentenced to death without possibility of appeal or reprieve.
And anyone who denies this is either naive or lying.
Now, imagine a regime like this encompassing the entire planet.
Indefinitely.
This is what we can really expect to take place in the WTS's "New System".
...
*The first time I fully realized the implications of what they'd been saying, I actually felt sick to my stomach.
And I was still in at the time.