How To Dismantle an Atomic Bomb is a horrible album as is, and I don't think it can get any better.
On the other hand, it's probably the most poorly mastered album I have ever listened to. Every track sounds overly-compressed and lacks dynamics... don't forget the awful clipping present on almost every track. I totally see this side of the argument.
Atomic Bomb, to me, is so awful and has no redeeming qualities whatsoever. You can only polish a turd so much and I don't think it is worth the band's time to put so much effort into a remaster.