One ability I think would be cool is Force Push. Giving me the ability to slam multiple enemies in a medium range cone in front of me into walls for massive damage depending on how close I am to them and how close they are to the wall. Or off cliffs for a one hit kill. Or even just to knock them back when they get too close for comfort, so I can safely nullify their shotguns, and pick them off one by one with my revolver. It would be great on a Warlock to give him some protection against Arcblades and some Titan abilities.