(Changed the title due to the thread progressing to talk about the entire spec rather than one ability, original post is still here however)
And it could use a buff in BG's also (especially when going up against premades who know what you can do).
Hungering Cold is a nice ability, but the fact that it's only in a radius around you is awful, for a number of reasons.
1). You cannot use it if you are Stunned,Feared, or incapacitated in any way.
2). You cannot use it at range
3). Because you cannot use it at range, it means you can be kited, and never see the use of the ability.
I don't think it's correct to need to use your core abilities to make this ability work. Let me explain before you fuss at me. Hungering Cold is a CC. Death Grip or Chains of ice pretty much has to be used in tandem if you want to capture someone in hungering cold. I have to waste 1 or 2 abilities to catch someone in my 10 second breakable on damage incapacitating affect (that granted, can capture an infinite amount of people in it). Hungering Cold needs to add to the list of CC's i have, not take away from it (Since i have to use CC, to get them into my hungering cold CC).
I think hungering cold could be way more useful when up against skilled people, because they know to stay the hell away from you more so than any other DK spec. Here's some suggestions to what I would find acceptable (and obviously, not limited to, just ones that come to mind).
1). Changing the Glyph of Hungering Cold to allow you to use it at a 30 yard range
2). Changing Hungering Cold to allow you to use it while afflicted in any kind of Crowd Control except Sheep/hex.
3). Changing Icy Reach to extend the radius of hungering cold by 2-5 yards.
With any of these changes ,the number of targets this ability can affect should be limited to 5 persons, instead of infinite.