Yep i tend to agree that playing this is going to be the only way to get a decent understanding of the mechanics your using. TBH while I love the idea of a VN that has more than a single story to tell (and even better yet multiple ways to traverse any single story) Im not so sure about the whole sliding scales bit.
Gender is a confusing enough issue today as it is, But at least most of us know who we are, what we want and like and what doesnt work for us. Trying to get a handle on NPCs who have random scales, that then get checked against scales players choose but might not really understand, and then adding randomness on top of that, sounds like its going to lead to alot of confusion, disappointment, and possibly frustration.
Still Im willing to keep a somewhat open mind and see what you do with it. Good luck!