Boy, I don’t know where the Watcher’s council’s going to go. They’ll always be around and they’ll always be a part of Buffy’s life, but I think that as she grows up, she needs them less and less and as Giles separates from her as a father figure, he’ll need them less and less.
They will always be around and they will always have an influence, but I think that Buffy is becoming more and more of an independent agent. In the history of Slayers, she’s lived longer than any other Slayer so she doesn’t need these guys.
She’s completely in unexplored territory, and the longer she lives, the further she’ll go into unexplored territory. I don’t see the Council having a big influence over Buffy in the future, but they may come back.