Finding armor or weapons with four ideal stats is difficult. Therefore, players are happy when three hit the mark, and the fourth can be rerolled at the Occultist by replacing one affix with another at random. But this requires not only gold, but also the rare material Forgotten Souls. Its main source is Helltides, which turn certain areas of the game into more challenging zones teeming with demons.
In Season 2, Blizzard reduced the drop rate of souls from gear salvaged at the blacksmith (it is now at most 10%, whereas previously it reached 100% for weapons). The developers explained that they wanted to encourage players to take part in Helltides this way.
Players complain that the developers have thus slowed down an already flawed itemization system, since Helltides are not available all the time, activating only every hour.
Users insist on making Helltides permanently active. However, this would likely divert players from the Blood Harvest seasonal activity, which is an almost identical event, only constantly available.
Season 2 runs until January, so a lot could still change.