One of the Rainbow Six games had that too I think, I remember using the Xbox headset to "give orders" and stuff, still, the ability to use both voice and gestures to modify weapons and stuff looks fun to me. I do wish they include headset support for that stuff though, more options = good IMO.
I tried to use that feature with Rainbow Six and it did not work worth a damn. I had to seriously struggle to get the mic to understand the orders I was giving. Eventually I just said "fuck it" and went with regular controls.