Snape! Any mention of him is wonderful in my eyes. So can't wait for the prince's tale. Also I want the "bravest man I ever knew" line to be in it. Don't care what they do/change as long as 1) the prince's tale is still there2) Snape's death and the "look at me" line are there 3) snape sobbing over lilly's letter 4) Harry tells albus severus about his name sake. If those are still in there like in the book I will be positively giddy!!
I read a slightly spoilery review about the film on another site..sounds like it will be great.