I believe this has been discussed(or at least mentioned) some where in the AI thread. I do not know about efficiency, but I do think it will be fancy
I mean, the usual AI will most likely only detect the enemy's box is behind another box, but this AI will actually "see" if the target is actually well hidden or not.

Another implementation of this type of AI is camouflage system. If the target is well camouflaged, blend's well to the world, the AI can be 'fooled' in more realistic way. Or perhaps it can actually detect the target movement this way...