That's why I said with the introduction of the potentials, season seven ruined the premise of the show. That is exactly my point.
I disagree.
I think the Potentials brought the premise of the show full-circle.
Buffy was an outsider...she was the one girl in all the world destined to fight evil...and she was even MORE of an outsider, from that calling, because she had friends and family who were aware of her identity and who helped her. She struggles with this - being alone, being marked different, but being stronger all the same because of the people in her life - throughout the entire series.
What the Shadowmen did was BAD. They chained the First Slayer, and every slayer to follow, to the earth. They commandeered her to fight. THEY chose the girl, her destiny, and she had to obey. Not positive stuff.
I love how in the end, Buffy's not the only one. The Slayer and the Potentials took the power back into their own hands, literally and figuratively. They were no longer puppets, or tools, or alone. And that was a good thing.
I don't think this "ruined" the premise of the show at all.
But, to the thread's original point, I agree with those saying the Council wanted the Slayer to be alone. They were following what the Shadowmen set into place: one girl is chained down to do their bidding. They wouldn't risk any Potentials being killed. I don't think they knew how many there were...for all they knew, the handful that they were aware of were the only ones, until their shelf-life ran out. Time and time again, they frowned upon Buffy's friends - civilians - helping her fight demons. These Potentials were not Slayers. They were civilians with the
potential to be Slayers.