Hey there, it's been a while since I looked at your work (though I REALLY enjoyed all the games I listened to). I would agree that part of it is that "too far" is different for different groups. My ideal would be to get a bit beyond the comfort level but not so far beyond that they players have no desire. That said, I think that a big part of why people are super uncomfortable with the whole sex angle is a cultural thing. For one thing, at least in the US (which I would imagine a lot of these comments are coming from?), there is much more exposure to graphic violence than sexuality (whether or not it is violent), so players are naturally a bit more desensitized.
My second thought (which I have gone back and forth on whether or not to mention it, but I think it offers some enlightenment), is that it might hit a bit too close to home, especially with the scene of a room covered in pornography. For most gamers, I think they can easily distance themselves from brutal or graphic violence (thinking
I would
never do
that), but when they see something clearly disturbing around a room wallpapered with pornography, it's something intrinsically more private where that line is perhaps a bit more blurred as far as what one would and wouldn't do. So the players see something that is clearly meant to be disturbing (and it is), but what is worse is they aren't necessarily able to distance themselves quite as much (again, perhaps just a thought).
Again, I don't know if that's the case, but at least for this specific case, I think that might be some of what is feeding into it. Whether or not it means it has crossed a line, I don't know, I just suspect that for some people they might have a hard time feeling "distance" between their actions and the horror....
EDIT: I think some of my personal beliefs and modes of thinking might affect my response to this, so if you happen to be really interested or want to chat some more, PM me, and I'll go back through and give a listen/read through some of the stuff you've said again, and compose a much more complete/thought out response. If not though, it's cool and I'll save us both time