This concerns vehicles like Aircars, Airspeeders, Snake, and so on which have big windshields and other porthole windows. Presumably even though you can see through them it would be Very Difficult to actually shoot through them because they'd have to be made of some pretty tough stuff (like ALON, etc).
Im suggesting a Broken state be added as the destroy-tile to default to, for at least the windshields. And maybe set the toughness on it somewhere around 60 damage so an explosion will blast them out but most small arms wont.
As for the hit cross section is there some way to make it an extremely small hole so you can see through but shooting through is unlikely?
Currently its just plain obnoxious, its like living in a glass house, to the point id rather not even be able to see out of the windows.