Female, for multiple reasons, of which most are already posted.
1. It's canon
2. There seems to be a passion involved in doing what you're doing in the game that I can't picture a male doing.
3. Sion is made special. (Everyone wants the Exile this way, just like how everyone wanted Trin in the Matrix
)
4. Feels more complete to me.
More or less the same reasons as everybody else.
DQK out