[Eexhaton]

An oil slick overlay on the whole aircraft rather than just the canopy would be excellent, but it'd likely involve an inordinate amount of time and effort to achieve... both external canopy damage and oil slicks are something that I'd love to see in the game but to be honest I can live without them. By all means, though, if anyone's feeling up to it...

exactly..

could'nt have said it any better myself.