WAR needs to lose the AoE stun, DRG needs to lose their 50% damage mitigation. Nobody should have an AoE stun outside of LB, and DRG should not be that tanky. I'd turn the AoE stun on Primal Rend into an AoE heavy, and drop the Horrid Roar mitigation down to 25% so you're still tanky, and at worst you cancel out the increased damage taken from Life of the Dragon.