God rays, dynamic depth of field, night vision scopes & binoc, thermal/infrared goggles, rainbows, dynamic wet surfaces with reflections, and many other effects.
Had the idea of making a shader for the suits visors (e.g. ecolog suit) in ordner to have some half-decent reflections going on the inside of the visor's glass.
Here's the result of my first test. Needs some refinement though. This is NOT part of version 1.1