I suspect Percy's about to get his mind "expanded" in ways he never dreamed of; one can hope this knocks some sense into the big prat. I thought Daphne's actions, while somewhat self-serving, were necessary if Pansy's actions were as complicit in what happened to other students as it seems; it may not necessarily be a pleasant task but she didn't push it off on someone else (you should take notes, Albus).
I loved the way they totally trapped and hounded the last of Tom Riddle to his capture. It's so appropriate that one with such an ego should be taken that way.
The overall fight was most interesting and I suspect the "fallout" will be even moreso as much gets rearranged in wizarding Britain. Methinks there's going to be a number of families where distant relations suddenly become Heads of the families. Too, 'twill be rather interesting to see what finally happened to Ron and how Ginny's going to take it as she finds out that Harry's now totally lost to her save, perhaps, as a friend.