i think it would be nice if someone could put together and add-on (perhaps Space Guy, because his add-ons are always top quality and full of love), for the window block in the special tab.
it would be rather simple, just the glass shatters (with sounds and chunk particles of course) if its shot at or damaged, and only the frame is left. like the way the window in the bedroom does if you fly into it really fast. then you could shoot or pass through it.
perhaps the glass could reappear after a few seconds, like respawning bricks.
reasons i think it would be good:
*without it, you cant shoot out of a building with glass windows unless you place big holes in the wall, which looks dumb, and which would then make the windows pretty useless.
*also, because it would be pretty epic to be able to just go totally rambo and blow out the whole side of an office building or gas station with a gattling gun or rocket launcher. like in this picture: