Testing with a basic Yoral destroyer:
- Medium weapon in fixed mount gets fixed mount graphic and a forward arc.
- Medium weapon in turret mount gets turret graphic and a 360 arc.
- Light weapon gets a turret and 360 arc regardless of what mount I put it in.

Apparently I can put light defensive weapons on every hardpoint. In fact, the auto-design throws light weapons on *everything* except dedicated torpedo slots now that I have primary beams. And this is despite the regular medium mounts specifically saying that "unlike turrets, medium mounts are ...