It's amazing how much you can tell from a film's opening five minutes. Legion kicks things off with a man falling from the sky; except the audience doesn't actually see him fall. He rises unfazed by the atmospheric drop and then takes off his jacket to reveal a set of elegant wings; except the audience doesn't actually see the wings. A large knife is unsheathed and the silhouetted wings are sliced off; except the audience doesn't actually see this blasphemous act, either. He then breaks way into an undisclosed, barely guarded armory housing enough weaponry to outfit an army battalion and proceeds to blow up a wall in the shape of a cross to make his unnecessary exit.
Everything you need to know about ex-effects man Scott Stewart's directorial debut is in this scene. It's not a matter of hinting without showing. There's no mystery as to who or what the fallen is, so you might as well show the audience. The movie has an R rating, so there's no reason to pussyfoot around the wing dismemberment. And there's no reason for the man to blow up a wall to get out of a room he walked into. Yet such is Legion. There is a want for ideas, for concepts, for cool "oh, the audience will love this" moments, but there's no mind behind the typewriter to motivate it nor is there talent behind the camera to bring it to life.