Window breaks, and leaves shards on the floor that generate noise to attract enemy
Had this idea for a while now, thought it would give an unfair advantage on maps with tons of windows, but maybe you could assign a few windows to actually create shards on the floor and others don't. You could also make the side of which the glass is shot from matter by making the shards fall on a specific side determined by which side it is shot from. These are all ideas/theories of course and might ruin balance for all I know.
