Tbh i think it looks good.
Heres the effects
Death Knight T21 Frost 2P Bonus - Howling Blast damage increased by 15% and Obliterate damage increased by 15%, and Frostscythe damage increased by 15%
Death Knight T21 Frost 4P Bonus - When you deal Frost damage, you have a chance to release a barrage of icy spikes at your target dealing (0% * 3) Frost damage.
I was going to change to unholy as of Thursday. But tbh i don't think frost will be in a bad spot. So what you think?