One think I like about Mel Gibson's movies to date, and going by the reviews Hacksaw Ridge is totally in his wheelhouse, is that he takes these old ass 1930s Hollywood cliches and plays them totally straight. Like he has these cliche characters who have like one personality trait, he's got comical tough loving drill sergeants who literally shout "We're not in Kansas anymore!" or love interest nurses who look up into the hero's eyes and live to cheer him on, and the hard father with the bible in one hand and the belt in the other, and all this shit you seen like a hundred times. And he's 100% irony-free about this stuff, so it gives it a throwback quality to the broad melodrama of old instead of just coming off cheesy as hell. And he combines that with ultraviolent, well-appointed big goddamn spectacle. Like almost hilariously giddy violence of dudes getting their legs blown off by cannonballs or faces ripped off by Jaguars, that's filmed with that same level of sincerity. Its not cynical or ugly like the Saw franchise or pop-kitsch ironic like a Tarantino movie. Mel Gibson believes in every frame of this shit, about individualism and personal freedom in a time of war, crafted to a super high level. If you don't believe me, watch Braveheart and then The Patriot back to back, see which movie works like gangbusters and which one is total shit despite so many surface similarities.
In his own way, I think he's similar to James Cameron in that regard. He has the ability to make audiences give into his quickly sketched characters and righteous themes, and marry them to top tier Hollywood spectacle. They've both been away from behind the camera for too long, I say.