Full character customisation is on my wish list, but I highly doubt I will add it before the rest of the game is finished, or if ever. The games story would still work if you could be both male and female, but it would pretty much double the amount sprites I'd have to do, not to mention doing all the alternate dialogue and cutscenes.
As I said, I'd like to do that, but I don't think it's relly going to happen.