I love the gradual unfolding of Snape and Draco's relationship as Draco approaches a state of readiness truly to learn Occlumency. The fic also gave me some ideas to think about in terms of why Harry was such a poor study at that subject, but mainly I enjoyed seeing the stages of Draco's fascination with the enigma that is Snape, the humane and careful way Snape responded to Draco, the subtle exploration of possibility for futures that won't necessarily come to pass.
Oh, and now I ship Draco/Andrew the Hufflepuff. :D