Unloading Ships

It should cost movement points for a ship to load/unload units,
unless it is in a city. The ship should lose 1 MP for every unit
in loads or unloads.

I cant say that I agree with one MP per units. I would say that it loses all MP with the first unit but can unload all it wants. Also it should only cost one of the MP for each unit since its not that much different to leave a boat than move from grasslands to grasslands

No, its much harder for get equipment, especially heavy equipment, off a ship then it is to simply transport it across land.

@eric_A: Idea makes excellent sense.

It would however make amphibious landings trickier to carry out, no doubt screwing the AI even further in that regard. One would have to hope it would be combined with improved naval AI.