The latest expansion pack has been released. Now, certain things are clear.

You are right, I wasn't entirely accurate, but such insignificant deviations from typical plots don't make the game's plot original, and your post, frankly, doesn't seem very convincing.
Sincerely.

Insignificant? In The Restoration of Erathia, there was a war for one kingdom. At the same time, there were three continents and many islands in that world. And it was just one kingdom. There weren't many such plots back then. In Armageddon's Blade, it was a struggle for the survival of demons. Not even their conquest of anything. In The Shadow of Death, it was border wars and intrigues. Where do you see insignificant deviations? In the pathetic Asylum, there aren't even insignificant deviations from typical plots.