I don't watch Supernatural, nor do I know anything about it. But I will say that the producers of The Sentinel tried their hardest to make sure there was a hot female in every episode--we fans called them the BOTW, Babe Of The Week. Even though I didn't read slash at the time (yes, I was a good girl, and all slash at that time was considered NC-17 even if there was no sexual content, and I was under 18), I just ignored the girls. The last two seasons they introduced a main female character that was fun, if Mary Sue-ish. People did what they do with Hermione. She was loved, or hated, or used. It was fun.