It makes absolutely no sense that an aoe instant ability hits harder than anything else and even aoe stuns people (on poly dr).
Too bad i dont see them doing anything about the damage it deals for pve reasons, atleast not in a hotfix. But removing the stupid stun component or replacing it with a root could and should be done with a haste.
I believe the proc playstyle is what makes frost a fun pve spec because if casted damage was always best you'd do nothing but cast frostbolt.
That being said they could move frost pvp playstyle more rewarding towards casted damage with the new setbonus system. For example fire setbonus in pvp makes you able to set up pyroblasts reliably with scorch casts making it less rng, which i believe differs from how you play fire in pve.