Remove the 3s cooldown and place it on Repulsor Brace instead. Reduce health gain from Controlled Demolition specifically from Volatile applied by this perk to 35 HP per explosion instead of 90, if it's seen as too rewarding there. I can't think of any other instances in which this perk could be abused, and even in these cases, it's pretty tame. Aside from the benefits of having a constant Overshield at little cost with Repulsor Brace (especially on Titan), an ad clear perk such as this doesn't need a cooldown.