Nice mod! Love the ideas you've put in so far...however, your story has a bit of flaws fitting in with the current timeline, but it's fixable. After Link was defeated, he very well could have been possesed by darkness instead of dying, as you've put here. However, Ganondorf was the one sealed inside of the Sacred Realm. That's detailed in the backstory of A Link to the Past, being named the "Imprisoning War", or "Sealing War." So, if anything, Link would currently be the only evil thing in Hyrule. Of course later on, Ganondorf finds his way to the Triforce since he's in the Sacred Realm and becomes Ganon permanently, boom Dark World, Ganon uses his alter ego Agahnim to take over the King of Hyrule's position, ladi-dah-dee-doo...So basically, you could leave it as it is and say that this is before the Sealing War, which could make sense, yet it'd leave the question why only Link was sealed if the Sages were already performing a sealing. Alternatively, and for the better, you could say that Link was sealed along with Ganondorf, but was deemed worthy of a group of trials from the Goddesses to find himself in the darkness. That happened because he wasn't naturally power hungry like Ganondorf, but still needed to redeem himself. This still leaves the question of "why didn't Link defeat Ganondorf in the Sacred Realm after his trials? What happened to the hero AFTER all of this?" Your choice, I guess. Either way, I'll look forward to this being completed!