Anyone noticed that "they" messed up with Professor Flitwick?
Warwick davies plays 2 professors at Hogwarts. Flitwick (the Charms teacher, who has a large bushy white beard) and the music teacher (who has a handlebar black moustache).
The Music teacher is on guard duty when Harry enters Hogwarts, yet Harry calls him "Flitwick".
And with them removing the DA/Professors vs Death Eaters fight, they erased the entire reason for Draco to spend all the movie with a cupboard! He didn't need the others to kill Dumbledore, so why did he go to so much bother to fix it?