Skimmed through your post. There are already female troops, same sex marriage and possibility for a female to get pregnant from another female. Of course, it's not native - it is possible through mods. I can't see any reason why TW should focus on those latter points. As for female troops.. wouldn't hurt but there are better things to focus on.
For now, go play with mods. You sound pretty depraved, so I'll get you started on your adventure. Try out
Captivity Events. It's an adult themed mod with slavery and prostitution! You can make your own events.