What they should have done was had attack power scale from VIT for tank classes instead of STR.

I *know* they can do it because Clemency, a healing spell, scales with STR, not MND, and none of my offensive spells scale with INT.

Considering what cross class abilities are available, scaling marauder/gladiator skills with VIT wouldn't be an issue, and the two CNJ spells I use on PLD don't scale at *all*.