I think units should have more movement points on larger maps, i dislike the idea my modern transport takes 24 turns (48 years in 1800s) to got to another island.
i think they limited the movement because they didn't want modern units or more advanced units to be far better than previous ones. Also for the unlucky bastards who don't have the resources to build the better units the previous ones won't be so bad...
it think thats kinda stupid... modern units esp boats should more MORE...
but i didn't make the game
This 5 movement rule over water kind of sucks since it makes island attacks hard and close to impossible since you simply cannot reinforce your landing army