Won't say we're gonna charge extra just to access that kind of content, but I don't want people who consider donating paying for things they don't like or even hate, so I'd have those themes separated.i personally think charging extra for stuff like that is kinda greedy if you dont want to do it then dont if you do and some people dont want it add a toggle to turn off content or make it easily avoidable.
Anyways, it's too early to talk about this kind of stuff as we're basically working on a single waifu story with no well-defined fetishes. Perfect outcome for me would be making everyone happy, although I know it's not possible, I'll try finding some compromises.