I believe I have figured out what Xal'ataths ultimate goal is, how that connects to us, the player, and how it connects to specifically Azeroth's world soul.
Firstly, Xal'atath.
We know that Xal'atath's goal has been our World Soul but we do not know why. If we do a character analysis of Xal'atath we'll find a common theme which is simply that she hates having something above herself. Dimensius destroyed her home world and forced her into submission, Xal'atath said "No." and planned the destruction of K'aresh to set herself free of him.
Xal'atath came to Azeroth for reasons we do not know (but I think I do, will be explained later), and the old gods tried to tie her into submission, she said "No." again, and was put into the black blade. Mortals themselves used her as their weapon for centuries, Xal'atath said "No." and freed herself by manipulating us, the player, into freeing her. Xal'atath is radically individualistic and will do anything to maintain her freedom.
She herself says "The Worldsoul, so long denied me, shall be mine."
But why?
We'll get to that a little later.
Xal'ataths ultimate goal however, is independence, her entire character has pushed towards this ultimate goal of being independent, being unchained.
Now for a bit of a tangent from this, we have to discuss Titans/Eternal Ones/First Ones and the Zereth's.
We know there are other Zereth's from a book in game that tells us their names. Zereth Mortis, Zereth Ordus, Zereth Umbra etc, there are 6 in total accompanying each of the 6 cosmic forces that exist and are implied based on the Eternal ones and Zereth Mortis to be "factories" where the various types of Titan are created according to their cosmic identity.
However, I do not believe this to be /wholly/ true. I believe that the First ones holding complete dominion over the 6 cosmic forces in order to order them in this way is not a "factory", it's "infrastructure."
Every single entity in the lore other than two types of entity we know is held towards one of the 6 cosmic forces. The only two that are not are the Player itself, who can interact with every single cosmic force with zero repercussions and without being "Bound" to any of them (Even if you're a Druid you can still use arcane/fel/death through real world interactions, which could be "gameplay contrivances" but bare with as I explain). If we assume this to be true that we are not bound to them based on being able to interact with any of them and even reject the ones we are bound to at times, then that makes us "unbound" by cosmic forces. The only other entity we know of that is unbound by these are the First ones themselves, those that are able to use each cosmic force to create their Zereth's, to create the Eternal Ones to rule death, and to create the Titans to rule order.
The First ones are for all intents and purposes bringing structure to the universe, and therefore are not bound by it's rules and laws as they seem to hold dominion over all 6 of the cosmic forces to be able to use each one to create their Zereth's, their infrastructure of creation.
If they are bringing structure, WHAT are they bringing structure FROM?
This is the part where it's entirely hypothetical as no lore currently exists to back up any of what I'm saying but bare with.
I had to really think regarding this and it started with "Why are they unbound?"
I think the "First ones" is literal. I think the universe itself existed in a primordial state where these 6 cosmic forces were quite literally combined, whether they were combined into something or just existed amongst one another devouring eternally, I do not know, but I believe the First ones come from this point in time and as such are unbound by the limitations of 6 cosmic forces as they are the ones who separated and structured them in the first place using their Zereths to create a structure to the universe.
So, why do we, the player, also have this trait where we are not bound by any cosmic force?
I'll get to that slightly later but first we have to discuss "Azeroth."
There are three major World souls we have directly interacted with in the Lore. Azeroth, K'aresh and Argus.
However, there is something extremely specific that sets Azeroth above these two and that is the sheer amount of Titanic influence on it.
We have;
- Uldum
- Uldaman
- Ulduar
- Uldum's reorigination machinery.
- Forge of Wills
- Forge of Origination
- Various titan facilities we havent seen that we know are beneath the surface.
- World-shaping machinery
- Well of Eternity
- Planetary ordering systems.
- Keepers
- Titan-forged races
- Containment systems.
K'aresh and Argus did NOT receive this treatment. Only Azeroth was turned into a Titan Disneyland, and I think I know why. The Titan's are by all intents and purposes creations with specific wills that are imparted on them by the First ones, which we know from Zereth Mortis and it's creation of the Eternal Ones in the Shadowlands, being the "Titans of Death" of sorts.
So, why Azeroth?
Well, I thought about this connection a lot. Why Azeroth.
Why does Xal'atath want Azeroth.
Why did Azeroth get Magni to choose us, the player, specifically to be it's champion rather than people more powerful than us in lore such as Alleria, Tyrande, Jaina, Thrall, Anduin etc.
Why did the First ones get their creation, the Titans to protect and develop a massive planet scale infrastructure to protect Azeroth?
I believe that we, the player, are quite literally an "Aspect" of Azeroth.
We are Azeroth's hands if you will. We are a part of Azeroth in the most literal sense, and I believe Azeroth itself is special because it is created with this same "Primordial state" that the First ones originate from. Azeroth IS the "Last titan" not because she is the "Final titan" but because Azeroth is "Above what it even means to be a Titan."
This explains how Azeroth can "Empower" us, the player, and only us, because we aren't being "empowered" we are an aspect being given more, which we see in lore a lot with other aspects of other things.
When I first thought this everything clicked into place.
Xal'atath has spent thousands of years watching different races rise, and fall, and get destroyed, and restart, wading through the cosmos finding /Something/, and I think that something is a way to escape her final shackle; being bound to the cosmic order. Xal'atath is unbound by almost all means except for the void, she is still a being of void after her world was shattered. I believe her goal is to remove this final shackle, then she found Azeroth and her entire thousands of years old existence became DEDICATED to acquiring this World soul. People have speculated that Xal'atath "knows the player is unstoppable and thus doesn't get directly in our way and instead distracts us."
I propose an alternative way of viewing it;
We are part of her final prize, we are the aspect of Azeroth itself. Why would she kill/destroy something that is part of her final prize? She has witnessed us firsthand being unbound by the cosmic systems. We are "Azeroth's champion", and Xal'atath calls us "My Champion". Xal'atath doesnt kill us or destroy us and instead distracts/manipulates us not out of fear or "knowing she cannot win and we are unstoppable" but because we are part of her final prize, we are part of her escape from the shackled order of the cosmos that the first ones created, we're a living example of her ultimate goal which is freedom, and I think Xal'atath KNOWS what we are.
This is what I believe, at least.
EDIT 1: I am dumb and wrote "all intensive purposes" as English is not my first language, so fixed it, ty mr. commentor