I just thought about something regarding that post-credit scene...
Depending on your WoL's gender, Elidibus says that he or she fortold our coming. So he certainly refers to Azem.
But that also means that Azem somehow knew that we would come. As if they had knowledge of the future.
So, basically, they are telling us that Azem has the same gender as our protagonist, but also knows what will happen in our character's life.
As far as we know, the only one who knew the future up to this point was Venat, because we told her about it.
Back in 5.3, I remember many players saying we are not Azem, we just inherited his/her soul. But actually...I am starting to wonder...
Are we going to travel back through time to become Azem? Is that what Yoshi-P meant when saying they would "go THAT far" with the story?
It certainly leads to the question of our soul, and how it could become complete again before we travel back.