Why Erenville succeeded as a character where others did not

[LilimoLimomo]

That line of reasoning sounds extremely tangential. You could equally claim that this is a discussion about Viera hats using that logic.

I'm guessing you know you're being hyperbolic. But if you truly think that, I'll ask you to provide a line-by-line explanation of how Viera hats are an important aspect of discussing Erenville's story.

We never had the opportunity to meet Cahciua in life, but we do have some insight into Erenville's memories of her, and what her will and final wishes were. The Endless in this specific context is just a narrative device for exploring that mother/son relationship, much the same way that time travel and Echo flashbacks have been employed to explore characters' memories previously.

With respect...you literally just explained an aspect of your thoughts on Erenville's story based on your interpretations of both Cahciua and the Endless. You just did the thing I said you had to do to discuss Erenville's story, the thing that you are supposedly arguing against.