*i don’t know if FoA or Ascension Altar is already covering parts of this, (or if it’s outright impossible with GD tech) if so apologize for redundant post.
i’m imagining a way to “paint” the entire/regular world map as Dangerous Domain(without being mod 
) on demand, so we can get the mutator layers in regular places, and or perhaps to dial up the mutator amount as we dare or increasing on the existing Dangerous Domains (ex +8 mutator in SoT now etc).
Both in terms of optional challenge but also as potential bonus reward for places that might not have it were it could be desired, as example farming Vala/Theodin now with peak challenge layer drop bonus.