Its a key part of the worlds history, all the events leading up to Dalamund and Bahamut.
I think its well past time that the original story be reintegrated for modern players.
Now as a 1.0 player, im not saying bring back the systems, god no, Im glad to see the back end of them (Crafting and combat was a nightmare).
What im suggesting is something like:
Hydaelyn breaks her silence once more to inform the Warrior of light that the talk by the Ascians about you having a shattered soul like everyone else is not entirely correct.
In the past before Bahamut you had a whole soul like the Ascians.
She believes that in order to proceed you need to be whole once more.
With that she enhances your Echo to allow you to travel back to where you were first created in Eorzia and suggests you talk to the Scions, then she falls silent again.
Talking to the scions about what you were told brings up a couple of issues.
First they realize, while they knew you were there before, their memories of you are gone, Traveling around to visit some key characters from your past confirms that nobody remembers anything more than you were there.
The second thing that concerns them is Hydaelyn's words "you were created."
Unable to decipher what that means they decide going back into your past is the best way to resolve things and create a White Auracite to store your memories and return them to those in the current period of time.
In your Inn room or home the White Auracite is placed and using it sends you back into the past using the Echo.
Immediately you find yourself floating in Darkness with Hydaelyn saying its time for the Warrior of Light to be born and from her Aether materializes you, In the case of those who are part of the Immortal Flames, they awaken in the cart right at the start of the game, materializing exactly like a Primal giving the driver a surprise as he enters Uldar.
From there players can jump between the past and present at any inn (Or their home to jump into the past only) and relive the main story and certain important side quests from 1.0 but in the 2.0/ARR gameplay style, right up too Carteneau where you play through the events of the cinematic. After Louisoix saves you, His spell shatters your soul though.
Unlike in the past, instead of ending up wherever, the fragments of your soul are absorbed into the white Auracite and then you return to the present.
When you speak to the Scions the White Auracite reacts, exploding into nothingness returning both the memories of you to everyone you met, But also restoring your soul from the fragments.
Telling the Scions how you were summoned into the world and didn't exist beforehand brings up a number of unanswered questions that could be interesting content in future. (Like a class that allows you take on smaller Primal forms, different Primal forms have different ability's etc).
So thats my idea on how it could be played out.
Thoughts anyone?