Yeah, among countless and countless of threads we have yet another DRK one. I just hope that they will look at this one and maybe consider it. This will be pretty in depth. There will be a second part to this in the replies because there isn't enough room for all of it in one post
With that said, I haven't been happy with the job since 5.0 dropped. While I think just busier WAR was a fine template for the time being absolutely nothing with it has changed with that aside of the lackluster additions in Endwalker.
If they intend on keeping TBN in the game there needs to be something to help DRK feel less squishy before level 70. I have two things in mind.
1) They could put oblation down to a lower level with one charge, and buff it to 15% damage reduction instead of 10%, and for 6-8 seconds instead of 10. They could make it either replace Dark Mind, or place it at lvl 58 it has an empty slot
2) They could tap it on at lvl 58 since that interval has an empty slot with no changes, and add the charge later at 82.
With that said, now I can get to the general changes.
Assuming they end up putting oblation to the lower level, I'd like to list how my two options could branch out respectively.
1a) They upgrade Oblation to The Blackest Night(TBN). TBN no longer requires mana and also no longer grants Dark Arts(DA) and is an in general 25% damage reduction for 6 seconds on a 25s cooldown.
-At level 82, TBN upgrades into "Dance of the Dead" or some other better name. The damage reduction remains the same, however instead of no longer granting DA, at the end of it's duration we get get a Sole Survivor Ready proc. Upon using this we get to use Sole Survivor, it is an aoe instead of a single target, with a unique and new animation. Upon landing landing any attack on the enemies with it's effect grants a 200 potency heal, this effect would last 6 seconds. Making this 200 instead of 400 would ensure that the self-sustain isn't broken with DRK's already powerful mitigation (also Abyssal Drain being in itself 200 potency per enemy hit).
1b)Oblation gets the second charge. TBN gets the upgrade listed above, still remaining as a barrier rather than straight damage reduction.
2) Living dead. Seriously, the only change it needs is so that it doesn't kill us at the end, but if the change to TBN is made above, it shouldn't be of much concern anymore so long as it's timed right.