u/OwlcatStarrok I just finished trying to dig through the additions to the DLC, and I wanted to report... that something is borked. >.>
Short version: Azata and Demon endings appear to be intended to branch off of the Nothing ending, but currently aren't available limiting their availability to Chaos or Chaos->Paradox->Nothing.
Long version: The DLC1Nothing ending is clearly supposed to be able to transition into the DLC1_Azata and DLC1_Demon endings as triggering answers have been added to an answer list on a DLC1Nothing dialogue branch. However, the branch isn't working. It might not have been working before, I don't know because I don't think I ever tested that dialogue.
Specifically, in the TalkToSelf dialogue, I get to the line "It is not {name} who is frozen in time. You are the one who has stopped in this moment. You wonder if {name} will prevail over Areelu Vorlesh without you. For some reason, you hope that {mf|he|she}...