How are you going to do away with Wormtail in Part II? Why would you want to do away with him in Part II? Either way, it's too late. The moment is over, the drama has been lost.
2) Where the tension of Voldemort's imminent arrival? I didn't feel it. Instead of building up suspense, the movie slowed down as soon as Dobby dropped the chandelier on Bellatrix. Then, instead of a heart-stopping escape (like in Godric's Hollow), Bellatrix whines that Dobby tried to hurt her. Harry and company stand still and wait until she's done.
3) Finally, why drain the drama out of their escape with a protracted speech by Dobby? I love Dobby. Everybody loves Dobby. But Bellatrix's antics and Dobby's speech were not fitting for the time and place.
It was like we were back in The Chamber of Secrets again: Harry is confronting Lucius Malfoy with Tom Riddle's Diary--only Harry is much older, the stakes are higher, Bellatrix has a knife, and Dobby is about to die.
And so the film ended as complaints formed in my throat. That is not where you want the audience to leave. The fact that the Half-Blood Prince and the Deathly Hallows Part I failed in their endings disappoints me all the more because I love the ending to the Order of the Phoenix.
The Order of the Phoenix ends with a perfect blend of action and heart-wrenching emotion. The Half-Blood Prince left me unfeeling when I should have been crying at Dumbledore's death, and Part I of the Deathly Hallows left me disappointed.
I think David Yates has done some great work with the Harry Potter movies, but he has twice disappointed me right before the credits have rolled. I hope I can't say the same when the Deathly Hallows Part II is over.