Hmmm, one thing has been done and can be set up manually , but only for stationary carriers.
place three lights green for good, red for too low, yellow for too high, white for good as well.
set these above deck at your prefered worked out landing approach height. using the F4 key + hold mouse click in FMB to raise lower the lights of your choice. when you are in correct approach you only see single light/s if you seeing red above white/green too low, etc etc. there are different methods for you to work out , but these are only examples of what works and what you can do.Have a play arpound to suite your needs, you'll work it out. Unfortunately, no one has come up with lights we can add on in FMB that will stay place on a moving ship.
hope this helps.
~S~