Tiers are just how players rank difficulty... these are fights that are so difficult that they have never, or just now, barely, with all cooldowns used, died to players that have been farming Undead Taeshlin, Rujik, Blazewind, etc for years, and could do the forementioned "Tier 11" Iskkath the Mindful with 12 people, or The Forest Gloom with 3-4 people. The difference in difficulty is completely absurd, yet the loot has marginal gains, if any. This has been a problem for years now, some items are fine, and good, but others are just... strangely... bad. Hopefully with marza back, since they are mostly his items that got nerfed into the ground, and he knows how difficult his fights are, they can be re-adjusted.