My initial thoughts bearing in mind that we are simulating a wide range of missiles using a very small number of inputs:
1. The player should not be able to launch the land attack missile (LAM) against ships. This seems to be the case.
2. The missiles once launched should be able to hit ships. An inertially only guided weapon would almost never hit a moving ship. An early generation radar guided missile could easily hit a ship. A modern guided missile could be launched with instruction to ignore ships or hit specific ships if they happen to come within seeker range.
3. The missiles once launched should be able to hit any side's units including friendlies. Again, this would depend on the particular guidance method(s), recent missiles could be launched to only attack very specific targets and avoid blue on blue yet most weapons until recently would go ahead and attack friendly units.
Please keep discussing what should happen. I appreciate the opening position saying that the missiles should not hit ships.