I'm sorry, but is Miles Morales really that popular? I'm sure he's a cool character, but does your average joe who sees CBMs but doesn't read comic books know who he is? Never mind the movie facing both a SH movie (Aquaman) and a family movie (Mary Poppins, though I admittedly am more optimistic on its box office than other predictors.)
http://collider.com/dwayne-johnson-jungle-cruise-movie-patty-jenkins/
Not a confirmation, but Dwayne Johnson really wants Patty Jenkins to be the director...yeah, I'd be down with that.