Well the only angels that we know of for a fact that despise humanity and see them as an abominations are Imperius and the angels who follow him. Last that we saw them, Archangels Auriel and Itherael possess no such hatred for humanity, which I think it’s safe to assume the same could be said for their followers. That said, while Auriel and itherael may not possess any hatred towards Sanctuary, it’s safe to say that they also have no love for it either, at least not near the level that Tyrael has for it.
To keep it simple, if the majority of angels did consider Humanity as abomination, to the point of wanting humanity eradicated, then closing their gates would be among the last things that they would do. And instead they’d likely just vote for humanity’s destruction, that’s not to say that they’d succeed. As instead they’d likely fight a struggling battle in that regard, but Imperius is stubborn enough to initiate a fight, even if the chances of victory are slim (we’ve seen that before).
No problem, they’re usually an enjoyable read.
The only thing we know of regarding the High Heaven laws is that consorting with demons is forbidden (which was broken by Inarius and number of renegade angels), and to not interfere with Sanctuary (which Tyrael had done).
As for Malthael’s followers never returning, I’m sure the Angiris Council assumed it was because the followers were steadfast in their search for Malthael and as such didn’t think it was worth reprimanding. Malthael’s actions were unknown to them, but with him being the former leader of the Angiris council, it was trust, love, and respect that kept them from growing suspicious of Malthael’s actions. Of course, it was that very same trust, love, and respect that made the angiris council (including Tyrael), blind to Malthael’s decent into madness.
A lesser profile Angel would’ve been slain on the spot if discovered. For example, Balzael was slain by Imperius without a trial, mostly because he attempted to kill Tyrael despite the fact that by Imperius’s knowledge, Balzael had acted within reason. It was only because Tyrael is such a high profile angel, that he was spared from such fate.
Not that weird when you consider things like time prisons which can trap both demons and angels in stasis for thousands of years, and the High Heavens never made the effort to reclaim their angelic warriors who were trapped there. So for any angels who stayed to fight in the battlefield of Eternity (note that I’m not talking about the angels who came to assist us during act 5), it’s highly likely that they were out of the loop regarding various events including the creation of Sanctuary, the birth of the Nephalems and so forth.
Hmm, I believe I see the issue here. Our take on “Heaven closing it’s doors” differ from one another. Your take (if I’m accurate that is), is that Heaven has cut any and all connections between themselves and Sanctuary and as such they themselves would no longer have the ability to enter Sanctuary even if they wished to, the same could be said vice versa as well whereas those on Sanctuary would be unable to ever enter Heaven even if they wished to. And so if an angel happens to leave the High Heavens right before the gate is closed, then they would be, in a sense, stranded on Sanctuary but at the same time freed from the High Heavens shackles (mostly). Now if that is your take (if it’s not, then I apologize for assuming), then yes you’d be absolutely correct in your statement that an angel could stay hidden on Sanctuary in that regard.
Personally, my take on it is a less literal interpretation and instead it’s more as in the High Heavens no longer intend to interact with Sanctuary, but will continue to observe from a safe distance. Pretty much similar to how the High Heavens had treated Sanctuary ever since the events of the Sin Wars.
Yes, but unlike the real world, the World of Diablo operates on the basis of magic and supernatural. And plenty of characters (both angels and demons) have shown themselves to be attuned to sensing and discerning either angelic or demonic essence, be it in objects or living creatures. That’s of course isn’t to say that this ability is without flaw.
That said, this discussion actually has me pumped for more info regarding Diablo 4 lore. Honestly, it’s to the point where I wouldn’t mind a blog (not the quarterly updates mind you), where most of the contents was used to elaborate further lore points.