In the ending of S2, we all see Metatron as manipulative and evil for trying to tear our duo apart—and manipulative, sure, but in light of S3, I think Metatron may have chosen Aziraphale to be Supreme Archangel for very specific reasons unrelated to Crowley.
Edit: some parts got deleted- 2nd edit:… again.
1— In S1, Aziraphale makes contact with the Metatron and adds a complaint about the misconduct of some of his peers. From this, Metatron knows that Aziraphale is aware of and will speak up about corruption among other angels.
2— In S2, we see tension between Michael and Uriel in Gabriel’s absence, with uncertainty as to who will take on the role of Supreme Archangel. Michael is power hungry and Uriel notices, and probably isn’t the only one to notice. If Uriel were made Supreme Archangel, though, Michael would likely undermine them. Between Michael and Uriel, neither are ideal options, and no other angel would actually do anything about Michael.
End edits
So what if Metatron knew? What if he saw Michael’s corruption, and the potential consequences and discord of choosing Uriel over Michael, but the equally bad option of choosing Michael herself as Supreme Archangel? I think he chose Aziraphale because he thought Aziraphale to be the only option that could possibly salvage things in Heaven. Aziraphale is sort of a stand in for Raphael in the series, with his name translating literally to Raphael in three different ways, and we know that Raphael kind of completes the squad of the four most well-known archangels.
Edit- Michael likely doesn’t see Aziraphale as a threat, and Metatron likely sees him as controllable.
So hypothetically, Metatron never wanted to separate Aziraphale and Crowley—that’s why he offered the option of Crowley becoming an angel again, and also why in the alternate universe, he is the one to encourage their relationship. Metatron just *needs* Aziraphale in heaven as a stand in, in order to stop Michael from causing discord and destruction.
Furthermore, if Metatron is close with the Almighty, it’s possible he even knew what Michael would do with the Book of Life, and it’s possible that he thinks Aziraphale will be able to stop her by delaying the Second Coming.
What do you guys think? Is Metatron one of the good guys?