They just can't go on their own to the New World. If that would be even barely possible, Ging would have gone there many times.
In the moment they need to affiliate to world politics in order to travel is the moment they can get captured.
Question:
What is actually is stopping someone like Ging from just venturing off to the dark continent?
I mean why does Ging even NEED authorization to get the Dark Continent?
Why can't he just say "eff politics. I do what I WANT!" and just sneak in?
I have a few ideas as to why...
1. Ging is probably really strong...but even the strongest nen user in the world
is probably no match against the military power of the V5.
2. The Zodiacs would probably cave in to political pressure to stop Ging.
Ging would likely have trouble if he had to fight all or most of them.
3. The Guardians are probably insanely strong. For some reason I'm imaging
giants that could squash even someone as powerful as Ging like a bug.
The Guardians probably have a similar attitude as Mike. And even MORE dangerous.
Still I'm rather interested to see just how difficult it is to even set foot on the dark continent. I'm 95% sure that's what the Chimeras will be for. That 5000 will be
dropped to like 50 in no time.