I quite liked the added scenes it was a nice departure from always being a step ahead of the film.
Really enjoyed the film. Some really nice scenes in there, thought they dealt with the relationships very well without making it cringey or annoying. Thought Lavender Brown was played to perfection, hilariously obsessive, the whole cinema was in hysterics as she was huffing on the train window and drawing the heart as Harry and Ron looked on horrified!
The death was well played I thought, glad they didn't go with the frozen Harry under the cloak. Little disappointed the battle wasn't in there though. The bit in the courtyard while not as good as a proper funeral was effective and by the time it had finished the whole cinema was deathly silent apart from people sobbing.
Things I would liked to have seen:
1. The Defense Against The Dark Arts lesson where Harry tells Snape that he doesn't have to call Harry "Sir"
2. The funeral
3. More Ginny and Harry
4. The finale from the book where they are sitting under the tree knowing that this is the end and they will never go back to Hogwarts
EDIT: Also just to say I went to the IMAX to watch it, a lot was made about it being in 3D and beginning was very impressive everything up to the end of recruiting Slughorn was in 3D then that's it... I was expecting a couple more scenes or the ending in 3D but no the first 12mins.