Nightmare Fuel: Ranma's personality, interests, everything that makes him himself is slowly consumed and destroyed by a combination of curse and past-life regression. Similar loss of identity occurs in a lot of the individuals who undergo the succubus conversion process. There's a reason why, with one or two exceptions, the only ones to do it are enemy victims and those for whom the alternative is dying – and even then, some refuse. Loss of Identity is a fate many consider to be A Fate Worse Than Death.
Rooting for the Empire: The overpowered nature of the Succubae's attacks and smug attitudes ever since Alexia have left some fans hoping the next set of enemies will win.
What Do You Mean, It's Not Symbolic?: BlackSky is almost an English translation of Lilith (in one of the possible etymologies, at least). It's even more telling when it's later translated into Demonic: AlterCaela. She also IS the queen of Succubae in their own little dimension of Hell.
Toonami's The Return
Fridge Brilliance: Sara 1.0's looping message shares lines from the original Intruder event. This is because of both how popular the event was, but also because Sara had the most lines out of the three Toonami Immersion Events held on the original Absolution. It sells the idea that the ship has returned if fans have something that they can recognize.