I have to admit, I'm with Teague on this one, mostly. As soon as it was over I said to myself, "well, that was half a movie." The last few Potter movies have felt more and more like Cliffs notes versions of abridged versions of the novels, and while Yates et. al. did a fair job choosing which moments to draw out, the whole thing feels like a race to cover what plot points they did choose to show.
*Dobby's death scene for example, could have been extremely moving, but rather than take a few extra beats to let the moment happen, they spent that time doing the whole thing with the slow-mo knife thing. They arrive at the beach and I had to go, "isn't that Bill and Fluer's place in the far background?"; they don't even establish where the characters have just arrived. They go right from Dobby's dead, to let's bury him; I felt like shouting "can we get a moment here people!" The same thing happened with Harry's wand: "Sorry, your wand broke during our escape" "Doesn't matter, give me yours, I'll take first watch" Or in Godric's Hollow, I was really looking forward to the scene at Harry's parent's house, but the whole scene is over as quick as Harry can say "My parents died here," and then it's off the cover the next plot point. Take. A. Moment. People.
Now, I get that there is a lot of plot to convey, and I don't know how you would have done it all in a single movie, so in that respect I'm glad there is simply more time to get it all out. I think the biggest failing here is that everything happens so fast, I didn't feel anything; there's no time for emotions to play out. A little bit would have helped, I mean the movie's already 146 minutes; will taking the extra few seconds here and there really make it that much longer?
All in all I'm still looking forward to Part 2, and not just in a completionist vein. I'm looking forward to The Battle of Hogwarts, but I hope they do more with it than they did with the Death Eater invasion in HBP. I hope they figure out how to convey the idea of how and why wands work the way they do, as well as Harry's death, vision, and resurrection.
Oh, and is it just me, or did Death in the animation (very cool btw, bravo) bear a fairly striking resemblance to General Grievous?