I also have a complaint about the way they changed the whole castle. And when Voldemort and Snape were in the boat shed? Since when, was there ever a boat shed in Harry Potter??
I'm not 100% sure if it is mentioned in the book, but I can remember going in a boat shed multiple times in the earlier games. Also, the Snape and Voldermort little change was probably my favourite addition to the movie.
Harry won the Elder Wand, he was the dumbest kid on Earth. He didn't even fix his phoenix wand! That was one of the whole point of him winning it!
I don't think that was a huge deal to be honest. If there was another film then yes I would say they should have shown it, but since there isn't - I don't think it was necessary. Much the same as how they didn't give Harry the 1000 Galleons after wining the Triwizard Tournament so that he could give them to George and Fred to start their shop.
The bit I was disappointed with was the ending. 150 pages is a little bit to much I think Panther, but the movie did miss the entire monologue between Harry and Voldermort in his final stages. Not to mention that there was like no one to witness the death of Voldermort because it was outside rather then in the Great Hall.
However, they made up for it with the amazing scenes that Professor McGonagall was in (Now my favourite character). Not too mention the cool as ninja moves from Snape when he flees the castle.
All in all I loved it. I have told those who has asked and this whole movie (part 1 and 2) has been the only of the franchise that I have come out happy with.