With the inclusion of Naval landings, one must wonder: "How am I to engage and enemy attempting to land upon my shores, and experience this wondrous new form of battle?"
The answer (That I very much hope CA have thought of as well) is simple: Make only certain areas fit for landing an army. Not all coastlines are as hospitable as, say, Normandy. Many have cliffs, rocks, and other natural hazards which make landing and army problematic. It could even be made so that the larger your force is, the less places there are to land it, the longer it takes to disembark, and the more noticeable to the enemy it is.
Example: I want to sneak in a reconnaissance force of 2 light infantry and a general. Due to their small numbers they can be landed in single turn almost anywhere I please. When I bring in the full army for the attack, there are only, say, two beaches in the region upon which I can land them and it takes a full two turns.
I think this system would give the enemy a fair chance to intercept the attacker, without hamstringing them too severely. It would also give one the ability to fortify beaches that would be likely spots for an invasion.