This has probably been suggested, but here goes. I have seen Frostfang and the effects are good for me, and recently I started using axes on my Warrior. The 5 skill with dual axes is pretty cool, and has great potential.
Some Legendaries, as you may already know, have trails behind the weapon. If Frostfang had a trail many skills would be awesome. The fifth skill on dual axes for Warrior would look so cool with rings of white surrounding you. Also some of the Ranger axe skills involve throwing a axe which spins (correct me if I’m wrong). The axe flying through the air would be turned into a disc of white flying towards the target.