If this wasn't a Warner Bros/DC property and therefore destined for self sabotage by the Studio that hates its Super Hero IPs, I might actually be excited about Dwayne Johnson playing Capt. Marvel AKA Shazam. I don't necessarily think The Rock is a great actor, but he seems genuinely nice and his "acting" skills would perfectly fit the cornball that's inherent in a Shazam movie.
The trick is hitting that cornball sweet spot. If they go for intentionally goofy, it'll suck. If they go for DC new typical stance of Gritty Realism in Comics films that Nolan and Snyder love, it'll suck. But if they aim for serious and get the right shitty director (Brett Ratner!!) he just might unintentionally deliver an exactly campy film even if it wasn't his intention. I realize that's naive optimism on my part.
But when giving an interview teasing his next project, Johnson said "Just say the word" hinting at a possible Shazam film, for that brief moment I got excited about a Shazam film with him in it. That's such a great Tag line for the film.
So right now, before they've even started, WB has a Shazam movie I'd go see. Now they just have to hire the wrong screenwriter, wrong director, let Johns, Didio, Harras and Nelson interfere, miscast the rest of the film, come up with awful CG, and make poor PR choices to make it suck like the rest of their products.
"No Tom Foolery today, Ron. I'm tired of looking at your dreadful, speckled mug.""Why do you hurt me in this way, Harry?"