Good way to balance these jobs is to remove Collision from WAR for now. Maybe rerelease it for lv60 Job Quest depending what PLD has in store at lv60 also.

Have Warrior gain new ability Buff called.

Blood Storm

(Recast: 6mins)
All players Gain HP drain with there auto-Attacks from 8 yams away. Increases Enimty slightly towards Warrior and on how many players are using the buff in action.
Ability lasts 30secs. 20% Drain is based on your attack damage. (100cap)
Cant Drain HP if your attack is higher then mobs HP.

Say you attack for 4500 damage on a lv1 mob. Your Drain would be 0.

Balancing this Ability:
Drain can be removed and replaced with just based on your attack %'s. So its doesn't steal any HP from the enemy.

Or...

Redoing Collision for Warrior to be this...

Instead of stealing hate from player target have it...

Collisioning a player target within 8 yams will make that players next attack do not any enmity.