As many may have noticed N'zoth seems to have been going through great lengths to test us (CoS, Azshara, etc.), and creatures that may have easily been able to i.e. drown us didn't (on the other hand: it can be argued that in Vash'jir drowning the players did not sufficiently work to the naga's advantage...).
Additionally we know from Uldir that the titans classify N'zoth as the corruptor, C'thun as the chaos god and Yogg-Saron as the god of ... deception.
So here's the thing: what if Yogg-Saron was never defeated, but was just more subtle about getting us to free him? We all recall the shattered chains in Ulduar, but somehow he was not yet free yet.
In his fight he guides inside of him to show us visions (manipulating us?), only for us to defeat the visions after which we get to bash his "brain" in order to lower the shadow barrier protecting his "body".
Now the odd thing is this: his "brain" seems to be made of the same star stuff as his chains, same as Algalon.
And as N'zoth showed us all the fleshy bits are right and terrifying, but the "real" old gods are evidently far less physical.
So i'm thinking that neither the "brain" nor the "body" of Yogg-Saron were in fact definitive manifestations of the entity, rather the "brain" was the last piece of the titanic shackles that bound him, and the body was just the decoy; Yogg-Saron's real form was the nigh invulnerable shield.
And he's tainted or outright controlled literaly everything in Ulduar, giving us obviously tampered records that conveniently put us on the trail of N'zoth.
So what if he just engineered his own "death" in the background, hiding deception behind deception where nothing short of titanic or divine intervention might reveal his machinations? Or of course the intervention of recently released fellow old god.
"All eyes shall be open!"
And it has been mentioned before: The Black Empire shall rise again.
Strife between the old gods defined that era.
I for one hope we end up in an "alliance" of convenience with N'zoth against his much stronger brother, he is our true creator after all.
And this might also explain our mysterious green-tinted death magic death-god.
Disclaimer: i frequently lurk this place for shits and giggles as i have many time consuming health issues, but do not mean to add to the time loss by posting here frequently, hence the burner account.
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Also i may not reply here after a while because this account will be ditched eventually, apologies for the inconvenience.
So please discuss this with eachother, and keep it civil and constructive!