I can understand what you mean exactly with such a term. However, one must understand that the more mature writers out there put in violence and swearing as a way to make the fic more 3D.
When it comes to violence and language, it's got to have the right mood. Otherwise, you just end up giving such bad material a bad name.
High description with violence has become a common practice among fanfics. Advanced writers understand something though, some readers lack imagination. As such, no matter what the situation, high description is key. I know it may be hard to believe, but it is true that some people have NO imagination. Just a simple description of the charcter dying is rather lacking. In order for one to understand how the charcter died, they must describe it in its fullest content. It must also be to the letter and to the point.
It's true guys. Just one person who said he had NO imagination started the whole increase in description thing.
However, there is one element I have yet to see maturly done on... Sex.
I have read many sex fics and basically, they disgust me. It's not because there's sex in it, it's basically because of how its done. All of which I have read are done rather immaturly. Sure, they're descriptive and many come out of love, I'll give them that, but with how they describe it and all, its just not right. They end up going too far as it were with description. Doing one maturely is very difficult, but highly possible. It takes full understanding of what it is and the right motive to really make it work. With sex, there's only so much one can handle. Also, it can't be done robotic like. It has to be done as if only love, instinct and a higher purpose made it happen. (In all truth, sex is only right if it's to start a family. One, mind you, that will be raised by love.) It is true that I will be putting a sex scene into my upcoming fic, but understand that it will revolve around these three elements and that it's purpose is all for good and nothing more.
In short, I allow such elements for fics. I leave the writer to their imagination and let them do what they want. However, if they don't do it right, they just disgust me and I lose all intrest in the end.
Trust me, a good fic can be made with everything that seems to destroy the basic criteria of the subject it revolves around, it just needs to suit the reader's tastes.