That's an excellent point. There's lots of good stuff to find in this episode. Apart from the plot of Slayer vs Initiative, there is a lot of little touches about The Slayer (the mythical warrior, not Buffy Summers) in s4 - for instance, both here and in "Living Conditions" (and later when Buffy spars with Riley, among other things) they make more of a point of Buffy's superpowers than they did in previous seasons. "Buffy STRONG!" And Giles and Xander quickly back down...

XANDER: Buffy, this hurts me more than it hurts you.
BUFFY: Not yet, but it will.
XANDER: Don't say that. ...Oh, PLEASE don't say that!