each should have their own config system, so, one change doesn't affect all dimension, I know about the biome that can be edited individually, but some mods add a lot of biomes and is kinda annoying
Btw that system seems to not working

I mean
I want to disable End fog
Increase fog density of the nether and maintain the default overworld fog of this mods

mm!! i'll add this to the 2.0 todo

Oh nice that's gonna be really usefull