Are we playing the same game?
2 End Mods in Short Circuit almost completely drains a group of enemies. I think the powers are fine as a baseline, but the endurance you get back has always been lackluster.
Ball Lightning is in the same boat as Short Circuit tbh.. don't slot it for damage. Any elec powerset is soft control, albiet that control it keeping end drained. Its better than holds since the resist doesn't really stack against it, and if you slot properly you can keep anything perma-drained just about. The few AVs you encounter that are "immune", you have other methods at your disposal (second power set, buffs, temp powers, etc.)
Im able to routinely solo hazard sized mobs +4 (with accuracy candy) by popping in, Short Circuit, Ball Lightning, then whatever else to boost my damage and drop a Thunderous Blast. It works amazingly with Kinetics and Transference. I'm looking forward to trying it with Elec Manip.