yeah i've heard a lot of nonsense about how zack synder is gonna make watchmen fail...well, i disagree.
honestly what i think will make or break this movie is the editting.
why?
well, the story is told through complex cutting through time and story-lines (black freighter). If the movie can successfully transistion through time and the story-lines then i think this movie will have the potential to work, even though they changed the ending.
visually this movie i think will work no matter what happens. it was filmed only with one camera, so they could setup the shots to look just like the novel frames more often. that would've happened less with more then one camera.
and besides, the director is more known for his visual work anyways
i certainly have high hopes.