I have a lot of questions/thoughts regarding the alpha timeline vs. the narrative, which I might try to properly write out and express sometime soon, but for now: what do you think about the idea that Aranea misunderstood her own powers, and instead of restoring the relevance of the GO doomed timeline to the alpha timeline, she restored it's relevance to the narrative? So instead of impacting LE in any way, what she achieved was diverging the story from the alpha timeline?

That’s a way to see it, however I should point out that, Aranea didn’t manage to even start her plan to make the GO! Timeline more Alpha. Her idea was to get rid of everything, then once she was the only person left, basically use her powers permanently on that Timeline, for the rest of time, to overwrite the Alpha. While you could talk about the effect she did have on the Timeline and the extent of Aranea’s powers, she never got to the part where she could actually try to make the GO! Timeline into the Alpha one. She died before the important part of her plan started.