This is definitely more realistic, and gives you the opportunity to move a unit away and heal.
Ranged attacks are more powerful and can kill units.This is useful as you cannot stack units and allows you to get more units off/on the transport when disembarking and embarking. Lands units can embark on water (must have Optics to promote).Terrain such as mountains etc will reduce the visibility of units. Site range is generally 2 hexes or more (not taking into account terrain).Terrain has an effect on movement, with some terrain such as mountains impassible to most units. Most have movement of at least two hexes.