If there aren't Au Ra in the population then well there aren't Au Ra in the population.

There were Au Ra all over Radz-at-Han but no Roegadyn, Lalafell or Elezen.

You really don't have to stuff every continent and city state with every race available. After having a city state that is widely populated with Au Ra i feel like it doesn't hurt that much that they are sitting this one out.

Point i can totally support tho is a more "diverse" cast when it comes to our WoL group. Would be great to get a Roegadyn or Au Ra as a scion, one which isn't killed a couple quests later...rest in peace moenbryda...