Your characterization of Slughorn is spot on. His musings on "work" and "leisure" are just perfect. I love it when he brings everything to Snape's office, from his favorite soup to comfortable chairs.

“By that time,” I interrupted him, “I’ll do what I always do for Lent: I give up my New Year’s resolutions.”

That's so him!

Great cameos of Hooch, Minerva and Flitwick. I loved to get a closer look at what happened at Hogwarts during seventh year. Great story!