As a lot of people have said, the 5% energy return on kinetic plating is really lackluster. You have to be taking absurd amounts of damage to get any energy return, and by that point Gauss has probably splattered into a fine red mist. Sure, arcane barrier helps mitigate some of that, but battery drain per hit + damage types that go through the shield makes the ability seem like it tries to do too many things at half-tilt. I did a few hours worth of build testing to see if anything made it work better, and the only thing that made the energy return feel even semi-acceptable was max str + highish shield.
Maybe consider making it moddable?