I'd honestly recommend making it a toggleable setting at the start rather than separating it into a win/lose situation. If you're playing a male character, and choose victory sex with a male enemy, it's kinda blindsiding to have them suddenly turn into a female.
Easier Said that done, that would either mean that half of the scenes are Missing for those people or that I have to write alternative scenes for each enemy.
At the Same time there are also females that would prefer If females didn't get Male all of a sudden and so on so I can't really do one Option for each preferences.