For warlocks, I would add ARC STORM: Activating this fires a bolt of lightning in the direction you are facing (down the crosshairs, no range limit). When it hits someone ore something, it generates an arc field. Enemies trapped inside loose their shields and their weapons malfunction temporarily, unable to fire. Movement speed also slows. This would kind of act like an EMP sort of super with a very long range that makes enemies highly vulnerable rather than kill them directly.