Is it possible to prevent further chunk generation?

Hello. My server world is almost 9gb and is shaped like this:

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I want to be able to stop people generating new chunks, so we can have a new main world without this world still generating new chunks. I've looked at plugins like Worldborder, but it can only create a rectangular/circular border, which would leave all the land (actually most likely sea) to be generated inbetween.

I've also looked at trimming the world, but then some people have built right at the ends of the branches, meaning all their work would be lost :c

Are there any plugins that could prevent new chunks being generated?
Thanks :>

 

chinwe

WorldBorder is still your best bet. It's the best at what it does, and it handles what it can do in the safest and most efficient ways possible. Since your server seems to be a relatively large, production-scale server, I wouldn't recommend much anything else.