Plugin people aren't going to make this.

Simply because we all are too busy with uni atm and this is absolutely not worth coding.


What that plugin should be able to do.
New world generation
Creating the spawn and working tppads in their corresponding biome.
World guarding all spawn structures.
Setting a world border.
Creating the lb sql tables
Purging/dropping the old world's sql tables.
Removing the old world off the map.
Adding the new world on the map with the correct settings.
Adding the world to multiverse + settings (pvp, firespread etc etc)




Considering you're new to Java, you're going to have a hard time doing the first thing on that list. Let alone the creating structures in a world. Even Mojang failed horribly with the villages at first.


So,

I'm confident to say that this is rejected.