Notorious Monsters don't fit in this game.

[Kallera]

There was no difficulty to hunt NMs in Black Shroud.
Except the ones in west shroud which you only needed for the moogle king quest. Every other NMs in the Black Shroud were in save areas. And you know where they would be. And if they were dead, you just waited 10 minutes fo the respawn.

Iirc, in 2.0 hunt nms can spawn in different locations across the map, and require actions to get it to spawn in the first place. Is this not correct?

Combine the ideas. Why wouldn't something like that be perfect for a larger and less aetheryte filled map?