World of Tanks needs smoke grenades. (Not literally smoke grenades)

I'm still thinking about the finals I watched last night and now I think that occluding vision would make the game a lot more interesting.  Some way of advancing without taking immediate fire or feinting by smoking and not using it.  

This would add a lot of strategic movement which seems to be impossible right now (at least at the level of game that I watched which was won 1-0 with 9 draws).

Either that or airstrikes.  The ability to call in a bombing run on a target location to clear out camping tanks.  

Imagine CS:GO where everyone has AWPs, there were no grenades of any type, and draws are allowed.