Its completely optional.
And there is no sexual content including scat by now !
As long as you're making things optional... that's all that really should matter.
You should make the content and storyline you want to make. I know you want input from the community, but you're kind of setting yourself up with a task to try and make everyone happy... so just be careful.
You're on the right track... you just gotta put more of yourself into the game and remember, you're not going to make everyone happy. Case in point, those that scream about your game being another game where the MC is being transformed. You're game isn't like all the other games that have the MC become the sissy, so don't think that (if you didn't, that's good...), you're game IS your game... so don't get discouraged on that.
Those that come onto your thread JUST to complain like that (it does nothing to help you make your game), just pay it no mind. Make that MC turning into a sissy/beta game all you want, I'll certainly be watching to see what you come up with... with ALL of your current and future tags <3