Not sure if this has been suggested before, but I would like to see a representation of elevations on the map. In other words, so you can see hills on the map and once you get within viewing distance of a landmass you can work out which hill is which.
Not asking for much detail just a rough representation. Don't get me wrong I like the no aids Navigation in the game, I actually use a protractor to navigate, but a hill or two would be nice to help find your way when you are near the coast.