I am a lvl 31 Arthas main with over 150 games played. Ever since I started playing him, I used only the talents that suit me but after a while I was starting to wonder if the talents like: Rime and Biting cold are good.
From my perspective it was like I even haven’t picked any talents at all. The Rime gives me physical armor and basic attack damage reduction, but the recharge is too long for a tank like Arthas. The reason is that he just can’t escape from the frontlines and retreat without the help of his team or managing rooting, slowing the enemies. My suggestion how to make this talent a bit more useful and tactical is to make it restack the 3 charges of Rime by a succesful hit of Frostmourne hungers. The Biting cold is not bad at doing damage… but there is a big BUT and that is… it needs a passive to deal a bonus (yes another 50%) damage to minions, mercenaries.
Consider applying some of these talent changes in the next patch.