Am I to understand that you said Deathly Hallows doesn't have enough content to fill itself out elegantly? If so, that's crazy talk because that book is the most satisfying conclusion to a major series that I've read. Did the movie-makers capture that magic? That's up to debate but there's certainly more than enough going on to fill up two movies.
The Deathly Hallows movies were so full of nothing they needed to have like half a movie filled out with a ridiculous laser battle between Harry and Voldemort as opposed to what was probably intended as a suspenseful "less is more" thing in the book.
Unlike you I didn't like the book very much though, so maybe that colors my view of the movies too.
Also I saw the last Hobbit movie.
It wasn't very good.