I think it would nice to have platoons of about 8 stormcloacks/imperials marching on the road with loud footsteps.
Would be nice to feel the civil war is not just happening around you so a random battle with about 8 stormcloacks fighting 8 imperials in a open space would be nice. For humor they should have your in-game wife appear with another dude in your house (In little Clothing) if you don't speak with her much.
One other thing is Skyrim can feel kinda like a small pace due to the amount of NPC's it can take on the screen. I wish the battles were bigger too. If your battling for the control of a province, you would think there would be a bigger army than 4 guys.