Kostly, you raise an interesting point:
My reply is that in my interpretation, the purpose of this site is more to allow the freedom of expression of individual fantasy than it is to provide for the publication of serious "lit" works such as you suggest.Wouldnt it be great if someone wrote a story that went through a real life quest of Discovery and Learning. One that had points that were erotic, but mainly was there to tell the real life story of Discovering ones sexuality. This might have more "Lit Value" then simple spank material that fills most of these pages
I do not diss the works that are here - some are very good. But you are quite right: they are limited in scope. I have received comments from readers of my own material that it is "too soft".
I would say that the kind of writing you suggest is readily available at amazon.com, barnes and noble.com, and other bookstores, and your local public library.
I would guess there are many writers here who would gladly have a reputable publisher take on his/her work. I have spoken directly with a number of publishers myself. However, the sad truth is, there is a limited market for such work - in large part because of the internet and sites such as this.