Fantastic write up(s)! A few questions that still linger:
What is the implication of The Age of Dark? If The Furtive Pygmy with the power of the Dark Soul spawned humans, what would be in it for humans and humanity to usher in the Age of Dark? Seems to me that it just leads to the undead taking over and everyone being cursed. Was the Pygmy/Manus a malignant creator? Or does the Dark Soul corrupt?
We know that people who chug on too much humanity/darkness get all messed up (see: Oolacile), except for the Dark Lord. The cutscenes for the game have always ended beyond a description of the Age of Dark being really dark (who woulda thunkit) and you getting lots of primordial serpents willing to "serve" you. It's also called the age of man, but Vendrick refers to this as men "taking our true shape", which means that while men may be dominant in the Age of Dark, it may not be in the form or way you expect.
Bear in mind that in DARK SOULS, the only information the protagonist gets about the Age of Dark is from the serpent Kaathe, so even if it wasn't 100% honesty as to what the Age of Dark entails, that's all the protag has to go on. Kaathe, however, insists he is sharing the "truth without sentiment".
The Dark Souls 2 DLC gave this line to Vendrick:
One day, fire will fade, and Dark will become a curse. Men will be free from death, left to wander eternally. Dark will again be ours, and in our true shape… We can bury the false legends of yore… Only… Is this our only choice?
Dark will become a curse = the Undead curse
left to wander eternally = I think you (Roarer) are right, everybody is going to end up Undead
in our true shape = either referring to the Undead, or something else, like the serpents
We can bury the false legends of yore = we can take our natural dominance over the Lords and other life forms
Is this our only choice? = (the part that I completely missed when I first played post-Aldia-patch!) suggesting there is an alternative beyond the fates of Light and Dark
---
In Dark Souls, why would the player fight Gwyn before linking the fire? Wouldn't it be in Gwyn's interest to allow the player to link the fire? This is one of my biggest gripes with the series actually - the only verb available to the player is 'kill'. Most of the time, the story supports the player having to face of and defeat every single character she/he meets, but sometimes I wish the game offered other ways of resolving things.
Gwyn is hollow, and he attacks you. There isn't enough of his soul left to keep the Fire going by the time you meet him, and he cannot be reasoned with. All old, glorious things in Dark Souls end up this way. Gwyn's interest was set forth a thousand years ago when he first decided to let himself link the Fire. By having his descendants shepherd humans into lighting themselves, his kind gets to retain their dominance and the Age of Fire with no losses, and because the humans don't know better they will never let Fire go out and become a Dark Lord instead.
There is one option in the game where you can choose not to kill, which is with Priscilla. After all her land is peaceful, and its inhabitants kind. ¯\_(ツ
_/¯
I rather wish there had been an option not to kill Nito personally.