I'm not certain the CC aspect is valuble in pvp. I've not seen any pvp arena videos of DK's with Hungering Cold Tipping the scales of a conflict, or have I been able to manage to do this myself in any of the practice arena's I've done with my friend and I, training to do arena's.
Maybe It's the range of the CC. Or when it can be used. Maybe it's the fact that it breaks too easily, or there is no real bonus for the frost fever that gets applied, since frost fever doesn't really do much damage in pvp. It seems like a little bit of everything.
I think Hungering Cold needs to see some buffs.
1). You can use it while CCed.
2). Instead of having it COST runic Power (Even with the Glyph), it should DRAIN your victims life force, and either restore you Life, or Runic power, depending on how how long they stay in hungering cold.
Reason why I'm giving no numbers, is because I don't want my idea evaluated on the numbers, but just the raw idea im putting out. Right now, Hungering Cold is STILL not very interesting to use. And that's the main issue here. I want it to be an exciting button to press. And it really......is quite the opposite.