I know. That was my point. It's high time for someone to actually die from it. They keep teasing it, and I think this season it will actually be used. Possibly on Skylar (by accident maybe) since she's smoking again.
One final thought on the opening sequence. Many here have already said who they think the M60 is for (Hank, Jesse, Skylar, DEA, Cartel, Germans)...
I think it will be Jesse. Right now Jesse is the moral center of the show, and there is not enough time left to build up a villain worthy enough of Walt needing to come back into town to machine gun down.
This show is about Walt's downward spiral. The show has established Jesse has a good heart. What cold be worse then Walt turning Jesse into a true villain? The only thing more sad than Walt right now is for him to turn someone he cares about just as bad as he is. A villain that he has to return to ABQ to kill...Jesse.
(If it ain't Jesse it's Hank)
Just my 2 cents. No more speculation from me on the opener till we get more info!