TL;DR - if you want the summary for each section, here it is:

Potency
The Positives:
- Disesteem is a nice addition to the class
- Scarlet Delirium, Comeuppance and Torcleaver feel good to use and have some weight behind their attacks
- The Negatives:
- Blood Weapon Stacks reduced from 5 to 3 resulting in 1200 less mana generation meaning less DPS and less TBNs. This also means we get 1 less Edge of Shadow every minute due to us needing to hold for our 2 minute burst
- The removal of Plunge frees up our bursts - but that potency wasn’t moved to another/new weaponskill/ability, making our bursts feel woefully empty.
- Pressing 1 2 3 constantly for 45 seconds per every burst gets old.
Changes:
- Bring back 5 Blood Weapon stacks
- Bring back Dark Arts (possibly mimic how Reaper has its enshroud phase which would give DRK some new abilities/weaponskills to press)
- Possibly grant something similar to Atonement/Continuation that fills out the woefully empty 1 2 3 phase between bursts
- Maybe bring back plunge, or as stated above, bring back Dark Arts to fill what has been lost and revitalise the class.
- Bring back Haste on Blood Weapon
- Unhook Abyssal Drain from Carve & Spit so we can use them at the same time/different times

Self-Sustain:
Changes
- Give DRK something that procs from the 1 2 3 that could give a burst of healing
- Add Abyssal healing potency per hit to Salt and Darkness
- Make Salted Earth a HoT for the tank
- Give Bloodspiller and the “Enhanced Delirium” trait a 400 potency heal per successful weaponskill

Mitigation:
Changes
- Living Dead - Remove the dying part so that Living Dead can be used more safely in solo content.
- Dark Mind - Change this from being magic mitigation only to just mitigating damage - change mitigation from 20% to 15%
- TBN - Total rework:
- Heal based off of the % left of the shield on expiration
- If TBN is consumed fully - heal for a % of max HP missing
- Give TBN a 12s HoT
- Give TBN 10% - 20% mitigation
- Make TBN cost 0 MP - To Balance this, make TBN recast 25s so you can bring it inline with the rest of the tanks 25s mitigation.
- Dark Missionary - Simply make this unlockable at level 70 so it can be used in earlier ultimates/dungeons/content.
- Oblation - Either merge Oblation into TBN OR give Oblation a simple HoT.

Lastly - Class Identity / How it feels to play.
Changes
- Change the audio for Disesteem and Bloodspiller to have more weight behind them as currently they either slap like wet fish or basically have no power behind the attacks at all.
- Change “Enhanced Unmend”/Remove it and add “Enhanced Bloodspiller” - a healing effect with a cure potency of 400
- Replace Souleater Animation with Power Slash Animation
- Replace Hard Slash animation with Scourge Animation