Canopy icing

[antiload]

It would be cool if the canopy on the F18/16 iced over when at high altitude, cold environments. It would give a lot of immersion. 

[SkateZilla]

Canopy icing is modelled in the 3d model.

 

[twistking]

Things like this shouldn't be module specific imho. They should be rolled out for every AC similar to the canopy rain effects.
That said, i agree it would be a very immersive feature.