Well I'll say this a major overhaul of skill mechanics is not likely to happen but as far as reactive tank goes I do think it should be modeled as such.
Upon turning on Defiance (+25% Healing Received +25% Max HP) and being in combat the user gains 1 Wrath every 5 seconds. Successful Critical Hit caused will cause enable the Warrior to activate Inner Beast.
Activating Inner Beast will cause generate a shield which blocks 10% MaxHP + 300% Dmg Done which last 5 seconds. If Inner Beast is a critical, Base MaxHP of shield increases to 15%. Inner Beast also generate 2 Wrath.
Upon achieving 5 Wrath stacks, the Warrior is able to use Unchained, Thrill of Battle, or Steel Cyclone.
Unchained last 15 seconds Increases the Warrior's Critical Chance (Not Rate) by 15%, Inner Beast usage during this period increases the Critical Chance by 2% and Unchained duration by 1 second. Unchained has a 120s CD consumes all Wrath. Warrior cannot gain Wrath during Unchained.
Thrill of Battle causes the Warrior to Increase Max HP and Heal for 100% of the damage dealt for 20 seconds. Inner Beast usage during this period further increases the Warrior's Max HP (Auto-Healed) and Healing Received by 4%. Warrior cannot gain Wrath during Thrill of Battle. Thrill of Battle has a 120s CD consumes all wrath.
Steel Cyclone consumes 3 Wrath to deal 300 Potency attack on targets with Storm's Eye debuff and 200 Potency on those without. Steel Cyclone causes 5% Max HP + 300% damage dealt as a shield. Steel Cyclone only consumes 2 Wrath if it hits 3 targets.
Infuriate causes the Warrior to gain 5 stacks of Wrath and boost it's Critical Chance by 10%, +2% Critical Chance for every current pooled Wrath (20% Crit Chance if used with 5 Wrath), for 10 seconds. 90s CD.
Vengeance with Defiance causes the Warrior to retaliate the attacker for a 50 Potency + 20% damage received and heal for 300% of the damage returned.
Foresight with Defiance causes the warrior to gain a Shield equal to 300% of the sum of the Warriors Defense, Magic Defense and Parry Rate for 10 seconds. 90s CD.