DWGambits
Write the combat rules your squad fights by, the way FFXII did it.
DWGambits lets you create custom (or assign preset) behaviors that your squad (Alt-Trusts) use, similar to the way FFXII's gambits work but tuned and integrated seamlessly into FFXI. A bard's song rules carry a Sings to box: pick Melee, Mages or Ranged and that verse lands only on those job groups, so Ballad stays on the casters and Minuet and March on the front line without the three songs evicting each other.
