Originally Posted by Sylinias
You can miss out on huge amounts of character-specific dialogue that were crafted in the Old Belgian Style over thousands of hours of coding, writing, editing and voice acting.

I think this a largely a request by those who are narratively minded on their own accord and that can fill in the blanks. For those who of us that want to experience a more custom game - I would get more enjoyment out of navigating a surface level experience of the world with a groups of custom players I already have some narrative framework for.

But if you're a player that wants character-specific dialogue and narratives designed by Larian surely you can opt for the Origin character choices.