Hello, all. Long time lurker, first time poster.
Just some thoughts here. I don’t think the Slayer origin story is meant to be taken literally. Or at least what happened to Buffy is not to be taken as the origin. My interpretation of what happened to Buffy is more of a test rather than what really happened as the origin. Sort of like Solomon, you can have power, or you can have knowledge. Chose to be less human, chose to be degraded and invaded, and you can have power. However you are leaving yourself open to the corruption that comes with power. Rather, Buffy chose knowledge. She chose not to be weak and accept the blackness and subsequent corruption from it. The PTB made this a test for her. At the begining of the season when Buffy was training Dawn, she said it was about power. At the end of the episode the Buffy!TFE told Spike it was also about power. The TFE is all about power, and so was Buffy. She is learning otherwise now. The power that she was going on about earlier being used to dig graves can be compared to the Dark Side of the Force(sorry to leap into Andrew-mode, but I think the metaphor works), but she passed the test and is coming back to the Light Side. Since the Buffyverse is frequently grey in terms of morality and good/evil, the overarching metaphor is to keep to a middle ground in your actions. Covet too much power, you become corrupted and evil. Covet too much knowledge, you become too consumed with your own hubris and can’t save yourself like The Watchers Council. Buffy was getting too much towards the side of power and thus corruption. Swinging back the other way will ultimately help defeat the corruption of The First. Evil, and thus The First, will always be around, but it can be tempered with knowledge.
As for the Slayer origins, there is nothing that precludes the PTB from having their role as well. There was evil in the land, the shamans prayed for relief and The Powers answered. They came down and imbued a girl with their power. They certainly don’t look human, after all look at Cordy’s “friend”, so the story got passed along as a demon came to give the Slayers power. And there just might be some demon attributes as a result. Cordy had to take demon essence in order to survive the visions. Just because there is demon, doesn’t mean there is something bad in the Slayer. It’s just a way for her to survive. I think that since there is a repeated message of returning to humanity, ala Angel and Spike, Buffy is going to give up this demon side of her to seal the Hellmouth, or give it Faith to augment her powers, or even one of the Slayerettes. Either way, Buffy is going to return to being fully human. And perhaps Angel will too and Buffy is going to have to choose between him and Spike. Just WAGs. The part about being “chained to the earth” is sort of a lament. The Slayer has a duty to protect the earth, she cannot dream, she cannot be raised up to the PTB like Cordy, and she must subsequently be buried in the earth. It’s a heavy burden, and she’s chained to it. Ultimately Buffy is going to break those chains and live a normal, happy life.
And off topic sort of for a moment. Anybody else notice that at the end of the intro’s for the last two seasons, that it wasn’t really Buffy? At the end of season six as the last chord of the theme music plays, there is the shot of Buffy in black looking tough and threatening Glory from the previous season. But it really wasn’t Buffy, rather the Buffybot. At the end of this season, in the same place, there is Buffy in black with her arms crossed with a smirk on her face. But it really isn’t Buffy, rather Buffy!The First. Probably nothing deep or hidden in that, just something I notice.
Wow, that was long and rambling. I now return you to your regularly scheduled postings.