Hmmm interesting

War: Instead of making their self heals based off damage have it base off maximum health% this should help the mitigation for wars it also helps motivate the importance of tank stance.

PLD: Since their dps is the lowest make them the complete tank package for those who really love high defense. Which means allowing them to block magic. RA should debuff INT by 10% just like RoH debuff str. With shelton they should receive 50 tp as well as mp.

DRK: tricky but increase their damage. Blood sword does a 10% damage increase added Why, because DRK seems to shine by taking damage. I would change up the carve attack to 700 potency based on certain amount of damage received total. This way they can go tit for tat.