The first thing I should say is that none of the scenes in game are written with the intention of appearing at all non-consensual, though I can see what you mean about the scene with Katie. I'm probably more likely to overlook things that might come across like that with the stuff I write because in my mind, it's always consensual. I know that Katie tells the player her ass is off limits specifically because she wants the player to fuck the Orc with her, because she wants to make the Orc cum multiple times, not because she's actually opposed to anal with the player. But of course, as the person playing the game, you can't know that, and I think it was worded poorly for that intention, so I'll probably adjust the wording on the scene. I think it's especially worth changing since fingering her ass isn't presented as an option to the player, it's just how the scene plays out.
I don't think I will change the scene with the Imp (Stacy) though. When you first encounter her, she immediately wants the player to act as a "hole girl" for her in the gloryhole you mention, so I don't think it's out of place for the player to go straight to sex when they find her humping the wall shortly afterwards. It's also played off as not being a big deal to try and further set the mood of the game, which, like you mentioned, is that everyone is super horny, and so while the Imp wanted to top the player, that was still more of a preference than anything. (A big reason everything is set up like this is to have sex tied into combat feel consensual, as it's more like the characters are fighting to see who's going to be on top, because the outcome of sex is just a given as far as everyone is concerned.) Lastly, I'm less bothered by it because it's optional.
As for depravity, it can be a bit of a mess at times. The main reason topping reduces depravity, is because it also often reduces femininity. And since reducing femininity is strictly a negative, if topping didn't also reduce depravity, you'd just be straight up punished for doing it. Which is especially bad since it's usually an option for winning a fight, so making winning a punishment would just feel really bad.
Generally, I've considered events that reduce depravity to either be purifying through something like volunteering at the church, or simply something that raises the players confidence, even if that doesn't exactly fit the idea of reducing depravity. I even have some scenes where the note that lets you know your depravity has gone down questions how what you've just done could actually reduce your depravity, lol.
As for your comment on depravity being based on my framing of a scene, I don't really see an alternative. You point out that you could imagine framing the Elf treetop date scene as the player being a cheap hoe, which reads to me that you can also view it the way I intended as a less depraved scene. So if you can see it both ways, what choice do I have other than to make the decision myself there? It can't be both high and low depravity.
I also don't really see the slut shaming angle, especially since the game lets you fully embrace having high depravity and unlock skills that benefit from higher levels of depravity. There's also the game mechanic angle to look at. Defeat scenes often give high depravity because it's a soft punishment for losing to an enemy, though the scenes will also usually give a smaller amount of femininity as compensation. Voluntary scenes that give high depravity usually also give the player rewards that outweigh the downside of the depravity gained, so choosing to slut it up is meant to be beneficial.
I'm glad you liked the game otherwise. I'd like to say there aren't more scenes that will turn you off like the one's with Katie and the Imp, but I'd never considered that those scenes could be seen that way, so there might be other scenes in the game that would turn you off like that, I can't make guarantees either way.