I liked the film, but I completely agree that Godzilla needed to be in the film for more than 20 minutes. Edwards needed to get Pacific Rim with the battles, but maybe he just doesn't have the action chops to pull it off? The end fight itself was fun, but it was all in 30 second snippets rather than one long fight scene. That he kept cutting away in the payoff fight scene was frustrating.
Ledger had a whole movie to himself as the Joker. With Suicide Squad, how much screen time can they give to the Joker? I doubt the story revolves around him. He could be great, but he'll probably only have to do it for 10 minutes of the film.