More ideas:
Like Rise and Fall, an embark/disembark function for ships. Basically, it just locks (or unlocks) a ship on the shore. So when units are told to board, the vessel doesnt move, and make boarding difficult.
Idea two:
Once necessary animations are done, perhaps we could have different rest and movement anims for different stances. Example: AoE 3 infantry. Once could tell if a unit was in defensive, standground, agressive, or patroling.