Roegadyn will never have tails as the tail was how Galka reproduced in XI. It was cut off and a new body regenerated out of it after the original body was burnt to ash, when the new body was ready it would return to town with most of the memories of the warrior who had left but none of the skills or training needing to be retaught what it was to be a Galka.

Roegadyn do not reincarnate like Galka so there is no reason for that lore piece.