add zone tags and modifiers that affect zone types

The current "while a pinnacle atlas boss is in your presence" is pretty terrible. Is sirus nearby while he's dropping a meteor on my head? Maybe not... It would be better to tag the zones "deadly" (or whatever) and have it be "while in a deadly zone".
This way you'd also get the effects while, say, trying to dodge exarch balls.
IDK if zone tags already exist, but this would enable other such things - rolling maps could potentially add zone tags.
"Zone is now deadly. Monsters deal 20% more damage"
"Zone is now expert. Monsters award 100% more experience and have 100% more life."
etc