I wouldn't say useless by far, not the most supportive class (talking pve, obviously both subclasses wreck and are supportive in pvp) but still hold their own just fine.. well gunslinger does, blade dancer is pretty much only an asset because of the invis. arc blade is the one part I agree with the uselessness on, it needs an orb gen buff for sure, I could get behind a damage buff to both hunter supers too. whenever I use bladedancer I pretty much save my super for emergency revives (vanish) or taking out a pesky captain.