I'm clinging onto the idea that our character is the dissident ascian we hear about. Makes sense to me at least. A broken ascian soul being slowly put back together. No telling how powerful we'll be eventually.
I mean, given we're pretty much the only ones who can teleport around aether crystals and attune to them makes me think we're more than just heroes blessed by Hydaelyn. Technically all the scions are, but we're still even more special.
Would be interesting if the rejoining would fully awaken us as an ascian. May actually be a bad thing for the zodiark followers ironically.