I was playing a town assault mission (with helis, mortars and stuff) and the destruction all around was awesome, but I think one thing can make it even more awesome. Imagine if a partially destroyed could catch on fire. And Im not talking about some dynamic fire that will destroy the whole map (and my CPU).
I think that if a building that got partially destroyed would have a some chance of catching on fire and burning partially (or entirely) would be awesome. Because come on, nothing says "war" like smoke and destruction.