The fact that they made him a man leads me to suspect that they might actually intend to introduce his female counterpart in the 'real' world. It would be very ironic if they didn't.
I wouldn't be that optimistic. Admiral Thomas could've been chosen to a) balance the woman-heavy cast, or b), to show a man in charge to complement the female captain.
But if that were necessary, surely we would have had a female admiral in the 'real' universe by now to a) balance the man-heavy cast, or b), to show a woman in charge to complement the male captain.
My tongue is firmly in my cheek - that even in a gender-swapped world the writers refuse to have female admirals.
I will reserve judgment and genuine critique for when I've read the story however.