Well, if the WAR dies, there's no way to recover TP normally, whereas almost every other class has an ability (natural or CC) that restores their resources when being raised in the middle of combat. That's my biggest concern in every difficult fight. If WARs had Invigorate, that would be a lot easier for me to manage that kind of situation.
Also, the Keen Flurry wouldn't hurt much either, and Blood for Blood is a great PVP skill the way PVP strats are right now.