you had me from "admiring three generations of Potter arses," which, by the way, possibly best opening to a story ever.
This was just completely great. I know that doesn't give much to go on in terms of your pornfessional development, but it was. Great. I found myself wondering way too much at the end how on earth it was going to pan out over the next two years, with my inner "Snape can't be so mean to take it out on the kid for THAT long" kicking in and imagining some dreadful, stupid heartwrenching scene where Snape admits how just bone-crushingly disappointed he was that his protege turned out to be a stoopid-head in the revenge/general Slytherin activities department. And then they all got along and bought roses, the end.