Another man's filler is another man's treasure. 2 films means that we can have scenes in the movie that actually would bring the source material properly to life. You can do things like the wedding, being on the run, Grimmauld Place (Harry discovering Lily's letter in Sirius' room), planning to infiltrate the ministry, the doe, Ron leaving, Godric's Hallow, etc. properly for once!
If you can, please list scenes that have thusfar properly been done justice. The only one that even comes close IMO, is the graveyard in GoF (mostly because of Ralph Fiennes acting); the rest have been rushed and contrived. In OotP, we missed out on so much...even key things. I want them to do a proper job on DH.