Here’s my take on how to improve DK frost. I’m by no mean good at balancing, but I’ve played frost for a very long time and I think I have some idea that can be good :
1- Make Wraith walk baseline, I think there is no denial on that. There could be some work done so it makes sense with Death’s advance too so they don’t overlap each other but I feel lorewise, Wraith walk is much more “dk”. In exchange on the 40 talent, there could be a new talent that amplifies Wraith walk to something even better.
2- Get rid of Frozen pulse, and replace it with Soul Reaper - that deal shadow frost damage. That way, we have some execute too and we have 1 less useless talent.
3- Beside Gathering Storm, the 45 line is completely useless.
4- Make Obliterate rank 2 do frost damage exclusively, and not depending on KM proc. It would already boost the constancy of our dps
5- Make the ghoul permanent, and not a 1 min thing. UH DK have already a way stronger one that a generic ghoul we could have. To balance the thing even more, make it so that if the ghoul dies, or you Sacrificial Pact, you have a 1 to 2 minutes 2 until you can cast your ghoul again.
6- Make Breath of Sindragosa not a runic spender. I hate it, and most frost dk too. It’s the same situation Shadow Priest got in with void form. With the change they made to Void form, it’s so much more fun to play a Shadow priest now, so why not do the same exact thing to BoS?
7- Just balance DW and 2H, but I’m not good enough at balancing to speculate how it could be achieved
EDIT : Nithral had a really good idea too, make Glacial advance baseline too, it makes no sense that our aoe runic spender is a talent, and not UH. It’s not worth taking right now with how remorseless winter is much more better dps wise.
I think with those changed that are not overpowered, Frost Dk could become really fun and viable!