This is an interesting take.
Personally I'm not afraid of doing anything, I just didn't feel like going any further with it was warranted given the characters and who they are.
In one ending, the MC gets blown away, in another he gets his throat slit and incinerated, in the canon endings, another character gets shot repeatedly in the face, and in one ending an LI dies. That's pretty dark IMO.
I'm not into doing things for the shock value of it - I do things that make sense for the characters and story I've written. I also am not into some of the darker/more fucked up fetish stuff, so I stay away from that. All of that said - who knows what the future of my current project holds. (Well okay I do - but I'm not telling. Only 3 chapters are out so far, and you'll have to wait a while to know what's inside my head!)