: 1. No, I think Cortana being sent into the Domain was an accident and that
: she is claiming that title for herself now that she's in control of
: everything. She's taking the Mantle for her own kind, much like how the
: Didact refused to give it up from his own species. Humanity is just kinda
: sitting between the two waiting for our turn with the toy. I think that
: 343 GS calling the Chief a Reclaimer in The Library and the other number
: of incidents with Forerunners and their Sentinels referring to humanity as
: Reclaimers with no AI present proves this. Cortana is just being selfish.

That's how I saw it. It was basically Cortana getting into the Domain and having so much more computing power and information, that she realizes that SHE can take control and take the Mantle. She probably convinced the Warden and whatever other Forerunner AIs she needed to that it's a much more acceptable solution than the lowly Humans doing so.

: 2. I can't actually answer that, but it's possible that the Librarian set the
: events in motion to get Cortana to the Domain and to setup the galaxy with
: the Guardians at the end of Halo 5. Maybe to prepare for the return of the
: Forerunners? Or the Flood?

I wasn't aware the Librarian did anything to Cortana. Am I missing something?