So, Small Shield when overclocked allow you to chose between Expanding the Radius and Arc, or Reducing the Arc but doubling the Strength. Increasing range on Large Shields wouldn't be much useful considering how they work. Instead, I propose the following:
Modes:
- Reinforced: Exactly as now, -50% arc, +100% HP, +33% emp resistance.
- Repellent: Same as not overclocked, but it is "solid" which means that enemy ships can't move through it, removing the necessity of adding those ugly structure behind shields and also giving a new utility for Large Shields.
Maybe, instead of "solid" they could had some kind of push effect that prevent most thing from moving through unless they have incredible force.