I think having different graphic sets for units would really give more immersion and atmosphere into the game.
All Civs don't need their own graphics, but like a general sets for continents:
asian, european, african, south-american and middle-east.
Not every tank and fighter would need different graphs but for the most common units, like workers, scouts, pikemen, musketmen, rifles etc.
Note that Civ IV didn't have this when released, but an expansion brought them in.
Also don't say that it should be a free patch, as making new graphics require time and money, and as a DLC it would be an option for people who find it important.
Personally I would LOVE it!
All Civs don't need their own graphics, but like a general sets for continents:
asian, european, african, south-american and middle-east.
Not every tank and fighter would need different graphs but for the most common units, like workers, scouts, pikemen, musketmen, rifles etc.
Note that Civ IV didn't have this when released, but an expansion brought them in.
Also don't say that it should be a free patch, as making new graphics require time and money, and as a DLC it would be an option for people who find it important.
Personally I would LOVE it!