Aquaman in the eyes of the media and comics as in comedians is a joke. Yes if you seen animated, the comics, or game depictions of the character you would know he's a 1st class hero but that still needs to be shown to the media. A great way to do this after the bad mis-interpretations of the character would be to give him some spotlight either by a animated series or what this topic is about a movie. Aquaman being a looked down upon character might be a good reason to not put the name Aquaman in the title of the film, and use a Aliase of his, like how Batman had The Dark Knight and Superman The Man of Steel. The movie then could get epic trailers shown like what was done for Man of Steel to pull in a audience. So if you were to name a possible Aquaman film what would it be called?
My suggestion: King of the seven seas