It's just as foolish to blame all differences between men and women on gender bias as it is to blame them all on biological differences.

Anyway, having female gladiators be statistically different than male gladiators would add more variety to the game, which is a good thing. I also think you are making some BIG leaps in concluding that the ability to have female characters will disuade female players. I don't think male only options is a more welcoming environment to female players at all. I also know both my and my friend's wife would be more willing to play the game if they could make a female gladiator.

As long as you don't have Caesary or Evony style ads, I'm fine with it.