Allow the use of specific world gen datapack like terralith for specific world.

Example : I have 2 datapacks, one is Terralith+LargeBiome, the other is TerralithClassic

And the following world on the server :
Overworld (use TerralithClassic)

the_nether

the_end

OverworldTheBigOne (use Terralith+LargeBiome)

It would be awesome !

All of that with performance mods like DimensionalThreading, Sodium, Lithium, C2me, etc.