I would prefer the range finder paint a dot on a target every one on the ship can see, and have that dot be accompanied with distance and if you are on a gun, the shot drop and max range data for that weapon. I hold the first Tribe's game range finder as the high water mark for team driven spotting.
The green line is a targeting laser being shot by a friendly, the white line indicates where you have to aim on the X axis to hit it if it is stationary, the blue triangle indicates where you have to shoot to hit the point in space. There is a second blue square that indicates the high angle you need to shoot for the target. If there is any leading that needs to be done the gunner or the spotter has to figure that out on their own.