Probably one that was to be tweaked in Beta, but are there any thoughts around making each of the races a little more or less vulnerable to certain types of damage.
Back in EU, certain damage types would provide a little bonus when used against certain foes. It added a slight edge to keeping your weapon options versatile.
As it currently stands, all alien armour (within each race and rank) has the same level of resistance to Kinetic, Energy, Chemical and Incendiary i.e. your Caesian non combatant has the same values for each of the four damage types provided.
For example, would Incendiary ammo be more effective against Sebilians as it cauterises the wounds preventing their rapid healing ability?
To balance this, perhaps they should have slightly higher resistance to Kinetic attacks, representing their tough scaly hides (more than is currently given)