Galka have no genitals. At all. While they are treated as males for the sake of marriage ceremonies, they cannot in any way create children with others. They are neither male nor female anatomically. As such, there is no point in creating a female-esque version of this race. SE should just openly allow them to marry either a man or a woman and call it a day, in my opinion. My server had a lovely galka named Betty. She had her own pin-up album. I'm sure she was popular with the boys.

As for male mithra people have been begging for those since before FFXI was even released in Japan. SE has ignored all requests in this game; andi n FFXIV. i honestly doubt they will ever change their minds.