Actually, this is a compromise from a previous wish I'd called for many times: some sort of functioning rangefinder. You enter a mode, and you have to angle the 2 plates/mirrors until the image "looks" like a single image, then you check the range readout.
That'll never happen, it seems, so something to speed up the process we have would be nice: usually by the time I'm anywhere NEAR range of what I want to hit, the ship's already out of the area and heading away (or... sunk because I couldn't hit the SB, etc)
EDIT: For those that don't get the original point:
You can fire 3x as fast, but you still have to wait the same reload time for each gun. That means instead of "fire.... wait 30 seconds.... adjust... oops outta range" you're in "fire, wait 10, adjust, fire, wait 10, adjust, fire" all in the same time frame.