The most recent trailer for Suicide Squad, scored to Queen's "Bohemian Rhapsody" was very well-received, and probably the one piece of marketing for Warner Bros' recent deluge of filmmaking that's ended up more or less universally praised.
But, as it turns out, according to Devin Faraci at Birth.Movies.Death., that trailer wasn't terribly indicative of the actual film's tone. Per Faraci's source on the matter, "every joke in the movie is in that trailer". But, after the rapturous reception for the trailer in question, he reports that Warner Bros. is undergoing reshoots on the film to "beef up fun character moments and interactions" to the tune of tens of millions of dollars.
This is clearly a smart move on the part of the studio, who are now recognizing that the big draw of their competitors at Marvel is in how inherently fun their films are. Even the worst of their output (you know the ones!) has a sense of breeziness that makes for relatively decent Sunday afternoon viewing and allows for rewatchability. It's harder to say the same of movies like Man of Steel and Batman v Superman: Dawn of Justice, which both have their merits, but the dourness approaches oppressive.
Then again, I've yet to see a David Ayer film that I considered funny, so this should prove fascinating nonetheless.