Ash always came across as to conservative to be into women. Miranda is designed to be perfect and is likely looking for a perfect match to make perfect babies, LotSB shows she is very interested in having children at some point at least. Jack has been with women in the past, though I only recall that being a 3 way with a couple who double crossed her which may have left a bad memory. Would I have liked them to be romanceable for femShep? Which means that I don't have many choices with Liara in 1, Chambers added in 2 and Taylor in 3, I don't really count Allers or Samara as they don't go anywhere from what I recall. But all that said I don't mind them being straight, it helps keep the world believable, if they made the tough female marine Sgt.