Many of those attempting instanced raids in the early stages tend to use advanced materia melding on accessories, which lead to tanks being required to meld STR or VIT. Due to this there were times where the melded accessories were better than the accessories which dropped from clearing the instance. In order to resolve this issue, in Patch 3.2 we will be making adjustments that will change the damage calculations of tanks into a more appropriate state.
As an overall plan moving forward, we will be making adjustments so that a burden is not placed on any particular role in order to challenge a high-difficulty raid.