We really need to see Nicky take out a purloined holy hankie and blow his nose into it noisily in front of the Knights.

Just to be clear - facts are statements of nigh-indisputable truth. I am not sure that applies here. Mostly people say fact when what they really mean is collective opinion on a topic. Neither I would say apply here, to be honest.

And while I agree it is most likely the White God that Nicodemus is referring to, it isn't fact YET. That would require some exposition like Nicodemus saying to Dresden "The Enemy I fight against is The Almighty himself" or something along those lines, or Jim saying in an interview that the Enemy that Nic was referring to was TWG. But we don't have either of those. We just have speculation - which is deliberate on Jim's part (otherwise he wouldn't have used the label "The Enemy" and just said whoever Nic's great enemy is).

He could mean Lucifer, or an Outsider/Old One, or some other being we don't know of. The point is, the identity of Nic's "Enemy" is up for debate still and will be until we get further evidence.

This presumes pregnant/recent mothers inherent tiny oracular capacity is boosted by pregnancy, which if you think about it would be a pro-survival trait, and would be self-selecting genetically, as mothers with a stronger boosted oracular capacity would survive and pass this onto their children  This may be where the human talent for magic arose from, especially as it is matrilineal.

The talented were also especially affected which would be consistent with my theory. Harry has previously split the timeline in Grave Peril, but the effect was not so pronounced because an Apocalypse was much more distant. Conversely in binding the Titan Harry split the timeline again leading to the Apocalpse being pushed back, again not producing the immediate oracular backwash the destruction of the Red Court created.

We are headed to the BAT but Harry’s decisions can bring it forward or push it back a bit, by creating new time-lines. Harry’s journey is to the one where he eventually wins the BAT, so sometimes two steps forward means taking one step back, such as killing the Red Court, Harry brought the Apocalypse forward, but it’s one he can ‘win’. Where he failed the Apocalpse was delayed due to the Red Court waiting to build its strength, but was where he totally lost.

I think going after Eb, after Harry's bloodline would have hit the root bloodline that birthed magic into humanity. It would have effectively killed practitioners as a thing at the root.

Numbers 22:31 actually specifies nothing about the appearance of the angel:  "Then the Lord opened Balaam’s eyes, and he saw the angel of the Lord standing in the road with his sword drawn. So he bowed low and fell facedown."  Between the terror of the donkey and Balaam himself "falling facedown," I think this speaks to an inherently-frightening appearance, not even slightly normal or human.

Cowl has his fingers in ALL the pies of the Black Council and is it's most active member (he may be it's only member and is just using the name 'The Circle' to trick people into thinking there is a large organization with power behind him).