Ald Cyrod could not withstand Talos. This is something we need to come to terms with. The jungles, the excess, White-Gold city a gleaming sprawl of banners and canols. That Cyrodiil belongs to Reman.
What we have to grasp is as the years rolled on, nostalgia and whimsy reshaped the mythic. Nu Cyrod, in light of its God-Emperor, in light of the thinning of the Dragon Blood, in light of the sheer mythological strain of holding together Empire Actual, could only collapse into child-dream of that hardy northerner, Hjalti. Two brusque observations: if Tiber was a Cyrodiil, he was Colovian through and through, and We Are All in Talos' Head and Talos is Dreaming Us. Less crudely, the Empire Actual could only maintain its Nibenian (cosmopolitan) aspect through the reflection of it self back from its own colonies - as the years took the Empire further from mortal Tiber Septim, and closer to the praxis of the Oblivion Crisis, there was only one image of Cyrod that could survive the The Prince of Destruction and his claims. Understand Tamriel is always shifting, reshaping, in the fever dreams of the missing God and his substitutes. The only form that could survive the trauma of the very jaws of Oblivion opening, the horizon of the universe tearing, was that fanciful dream in the head of brutish Hjalti. Only one Empire stood a chance against the armies of Oblivion. Not Reman's, Perif's or even the Cyrodiil that Talos inherited. Where previous modes did the job for the last few traumas Empire Mythic withstood, this one required a different Cyrod. It was, simply put, the Cyrodiil we were given in The Elder Scrolls IV: Oblivion.
And then:
TALOS STORMCROWN =