One thing I love about Season 2 is that every character gets development
The writing crew didn't leave anyone without an episode. Willow becomes more and more powerful as she becomes interested in Magicks, Xander and Cordy get close despite hating each other for most of their lives, Willow and Oz get together, Angel/Angelus gets an amazing story arc, and Giles gets more development. Buffy goes through so much in this season, and she still comes out stronger for it.