A point or two in Stun Arrows is also handy early in the game (especially when fighting two strong opponents). Later in the game that and Poison Arrow can be replaced by explosive and splitting arrows.
I have not played a warrior yet in DKS, but I think Bleed would be worth boosting for the increase in damage and drop in duration. It isn't nearly as effective as it was in the original release of D2:ED, though, so I would only level it when I had spare skill points not reserved for the next level of primary skills.
Rush Attack against rangers/mages can be quite helpful (it can force them to switch to a melee weapon they are weaker with), but I never bothered doing so with my ranger in DKS.
