Well Bassicly it makes it so you can target certain areas of a ship (Not like click on it then you will shoot at it)by bassicly,well shooting there. This can do certain things,like lets say the gunnery room was hit too much,then autofiring guns would be less accurate,or the bridge/cockpit was hit,then you might loose control for a bit,and the time it takes to repair depends on the ammount of green,normal,veteran,and elite you have,it might encourage people to have near max crew and not just the least ammount aswell.Some things like an ammo storage might work aswell,if it gets hit you might loose some MG ammo or missiles even,and maybe the flux vents could be targeted to prevent flux from coming down and prevent venting,and maybe hiting the power might dissable the ship for a few seconds.