A lot of the Latin roots she uses were, thankfully, ones I managed to pick up on, lol.
But some of them (such as your explanation of the Malfoy's name) went right over my head. Really cool little trick to use, imo. I think things like the ones you mentioned really make for a great read. (I really enjoyed Mansfield Park, btw, but I never made the conncetion between the two Mrs. Norris's...duh!)
Not great literature, as some have said, but I don't feel the need to read "important" stuff all the time. Hey, I'm also a big Stephen King fan...I'm no literary snob, anyway! :) I think I would have been on the dock with everyone else, waiting for the latest Dickens installment, or devouring those "penny dreadfuls" by the handful. :)
Regardless, it's still a great name for a follower of Voldemort.
I noticed IMMEDIATELY that the cat's name was Mrs. Norris. They have some personality traits in common, do they not?