To me, Press-Switch will always be the first work I encountered that did this. Someone who wants to tell stories that go several levels, beyond the way these elements are typically incorporated in fiction. With Press-Switch… you can really tell this is written by someone who both thinks about body swapping and transformation every day. On their desire to explore more complex or nuanced stories involving familiar TSF concepts and themes, and, effectively, pushing the genre forward.
When it comes to praising the writers of TSF subject matter, I often compliment the writer on their understanding of the genre.