Can Frost get Soul Reaper or at least another button to press

I would approach it a little differently:

-Baseline Glacial Advance
-Remove useless hypothermic pres and replace with Frost Whelps
-I like your Chill Streak change:
“Remove from PvP talent pool; additionally, change ability to be able to bounce off the casting DK to provide a shield equal to 25% of the damage lasting 8 seconds that would have been dealt to an enemy if only one enemy is in range (explained more below)”
-Frostscythe Rework: I would have Frostsythe replace obliterate completely when chosen. I need to think this through more because that would be very difficult to balance. All obliterate interactions would stay intact? Would give us a Machine gun build option.
-Buff Icy Talons: stacks 4 times and buff raid by 3% or something.
-Buff Death’s Reach: Increases range and provides 2 charges.
-Wraith Walk baseline: Replace with new talent: Walkers Husk - Reduces damage 100% in pvp and 50% in pve when used. Fits damage mitigation theme better.
-DKs need better physical damage mitigation. Buff IBF, Permafrost, Death Pact or lichborne.

1st Row (Level 15): Unchanged (IT buffed)
2nd Row (Level 25): Unchanged
3rd Row (Level 30): Unchanged (Death’s Reach buffed)
4th Row (Level 35): Unchanged (FS changed mechanically)
5th Row (Level 40) : Permafrost - Walkers Husk - Death pact
6th Row (Level 45): Gathering Storm - Frost Whelps - Chill Streak
7th Row (Level 50): Unchanged