The biggest problem, is that AI platforms only have the MAD sensor, and that is tuned to 0, 1000, meaning your tactic wouldn't work.
So, I have decided to change it to a SAD sensor in effect, with depth range -50 to -750 feet, to avoid AI aircraft dropping torpedos on overflown ships and to make it possible to avoid them. I am not sure if a crew would actually drop on a MAD only contact with no other confirmation, but I suppose its better this way to be sure.
You guys can let me know if it would be better to have all AI MAD sensors behave like SAD sensors.