I'm so pleased you had fun with it. I'm also quite happy that you were able to see season 4 from another angle. I'm always excited when authors show me an unusual way of looking at canon.

Here's one: Because It's Wrong (http://www.allaboutspike.com/fic.html?id=294) by mahaliem. This very directly inspired my take on the fallout from the body switch. And made me think about what else might've fallen between the cracks. Mahaliem rocks!