While a big fan of HP-spending abilities, I agree that on WAR it simply isn't in a good spot. Unlike DRK, their survival and damage are basically behind the same button (Bloodwhetting -> Chaotic Cyclone) while Bloodwhetting itself is actually monumentally weaker than the three split buttons on DRK (Quietus lifesteal, Salted Earth regen + mitigation dome, TBN directed shield). Doesn't help their damage scales with current HP (which means they also get stronger with Thrill of Battle), the value is just hard to utilise.
Overall, I think Warrior has too much of its budget put into the Limit Break. For Warrior to really feel nice, you need to reach the Limit Break first while avoiding death like a pest (since you gain no LB during downtime).
I feel you WAR-bros.