Dawn would make a good Watcher. She can learn a little bit of everything. It’s implied that Xander becomes a Watcher, but I don’t know if that is the best role for him.
Yeah and I have to wonder, really, Xander, you checked the plans to make sure the high school wasn’t on squicky ground? How’d you miss the whole basement, eh?
So you’re all caught up? Sweet! 
Particularly after events later in the season. 
I just assumed that he’s just not as good at his job as everyone thinks he is.
LOL I did too.
And yes I’m caught up! Yay!