I would like to see the creation of an artillery officer. We have officers for everything else. Many players don't even consider using artillery units. The addition of an artillery officer could get more players to use support units. The artillery officer could give bonuses to artillery and antiaircraft units. I envision the artillery officer as having radar capabilities, an increased sight range, speed bonus, attack bonus and defense bonus.
In the real world, armies have engineer units that build defensive entrenchments and military support buildings. A elite engineer could bring a defensive bonus for any unit that is stacked with it. Also this unit could could speed up the production of buildings while it is stationed in the city or territory where buildings are being constructed. This would give us a limited ability to influence the battlefield in a similar fashion as an army allocating combat engineer units to fortify unit defensive potions or allocating exrta engineer units to speed up airfield construction or repair.
In the real world, armies have engineer units that build defensive entrenchments and military support buildings. A elite engineer could bring a defensive bonus for any unit that is stacked with it. Also this unit could could speed up the production of buildings while it is stationed in the city or territory where buildings are being constructed. This would give us a limited ability to influence the battlefield in a similar fashion as an army allocating combat engineer units to fortify unit defensive potions or allocating exrta engineer units to speed up airfield construction or repair.