The developers have said that improving it is on their to-do list, but it will not be fixed in Patch 2.1, though they added the Hellfire Amulet in that patch to spice things up a bit. The entire Infernal Machine process was modified in Reaper of Souls and grew much less attractive to most players. It can only be earned via the Infernal Machine quest, so players who want one must build their own.

Like all legendary items in Loot 2.0, the Hellfire Amulet is account-bound and can not be traded, sold, or given away. It does not provide any +experience% boost, as does the Hellfire Ring.

The Hellfire Amulet has a special legendary property of enabling one passive skill (from the class that crafts the amulet). This item can only be created in Reaper of Souls, and not in Diablo 3 classic. While the Hellfire Ring has been present in Diablo 3 since Patch v1.0.5, the Hellfire Amulet was added much later, in June 2014, three months after Reaper of Souls was released. The Hellfire Amulet is a legendary amulet created by crafting special materials obtained via the Infernal Machine event.

Diablo 3 infernal machine of