Eh...while I may disagree with some of your selections of nuanced and subtle *g*, I do agree that fanfic of shows like WW or BtVS (or even XF for all its gaps and inconsistencies) disproves the 'only bad source text produces good show'... But it does explain an awful lot! *bg*

These slash writers could be working on *any* topic and improve it. *Any* media creation would be crude clay in their hands.
I just love watching them put on that last loving bit of glaze, pouring it out just *so*. Beautifully put. Yes, so do I!!!