A few things:
Glyph of Dark Command is overrated. Rarely should you need to taunt, and it's affected by hit rating. Death grip isn't a taunt, but it's good for 3 seconds should a Dark Command fail. I've almost never had a Dark Command fail on me, even when running with 80 hit rating and tanking 4H.
Hungering Cold is little more than a trash ability. During high AoE situations it's unlikely it's going to "let a healer catch up", with the possible exception of a 5 man. Your DPS is already going nuts on the adds, you're not saving anything.
I'm sure there are some strategies where it's useful, but like AMZ, unless you're setting up the strat around it, you're not going to use it to it's full potential.
Wrong, Wrong, Wrong.
Originally Posted by Razzuvious
Haste has no effect on the top end of your weapon. It increases your weapon speed by 20% at the same damage. It merely lowers your swing speed so you get more swings in. In other words, if your damage is 1500-2000 at 3.4 speed normally, it would be 1500-2000 damage at a 20% lower speed (probably around 3.0). It is a threat (and damage) increasing talent, and if you aren't running with an Enhancement Shaman (or another frost DK), you should spec into it.
I guess this is more of a style thing, but bundling Rune Strike only with Frost Strike is silly, you're missing out on a lot of swings. Macro it with just about everything - constantly using Rune Strike keeps your RP lower, so you wouldn't need the two points in RPM. I also don't think you need any points in dark command, but to each his own.
Luck is what happens when preparation meets opportunity. -Seneca
Everyone marvels at a square egg, but only the chicken understands the PAIN.