i think the idea in this video by LevelCapGaming would be an interesting feature to add in Insurgency: Sandstorm
i see alot of people just skip sights in security because their sights have a larger housing, which could interfere them in detecting enemies (i once died because half of the enemy is blocked by the actual sight housing).
i believe the large housing is meant to protect the optics in them, maybe you could balance sights with smaller housing by making the optics crack after explosions nearby.
i hope that the devs will consider adding this feature to Insurgency: Sandstorm
the optic housing in video game is rendered in a 2D surface, irl you can aim with both eyes and the housing would just be a blur around the sight, the housing then becomes less obstructing to vision