This may be intentional(realism), but I noticed that smoke grenades don't reset after a round ends. It kind of sucks, but it you did it on purpose it's fine with me.
Forgot to mention...
I love the smoke by the way, it looks great. Also, I love the new textures and the stain maps. There is nothing like after playing a map for a while seeing paint everywhere. Overall everything looks outstanding, great job.