I meant to mention this earlier, but something else significant about the Live Free Or Die Hard trailer is that it's already the best preview in the series. Until now, the trailer for ...With A Vengeance (the one with "On a good day, he's a great cop; 0n a bad day, he's the best there is") was the series high-point, but it was as much by default as anything else. All the trailers, even that one, used synthetic music; that was just the one where its use was least obnoxious.
The new preview is the first to use orchestral and choral music, which is always the better strategy. It's more likely a decision made at the advertising campaign level than the overall creative one, but it's a good sign nonetheless.
Die Hard 3 also had the best poster: