Tier 1 importance - MNK WAR NIN BLU BLM WHM
Covers most, if not all elemental triggers, blunt procs, red triggers, and basic party roles of DD, tank, support, etc.
Tier 2 importance - THF DNC BRD
Offers Auxiliary support, and can fufill tank or DD if needed to.
Tier 3 - (Anything with a crit ws that can DD for exp group)
Tier 4 -not important at all- PLD SAM DRK RDM
These guys need the buffs badly, or at least something to make them fufill another role while maintaining their job identity.
And I disagree with OP, WAR and DRG compete for top DD spot, but that is rather irrelevant.
