Hopes? None. Warner Bros. has no fucking clue how to use DC characters and ideas in theaters. They may get lucky with specific movies being decent, but the best movies are not even as good as the worst of the animated movies and series. They keep throwing money and names at live action, instead of focusing on telling good stories that stay true to the essence of the characters.
I don’t see Gunn doing any better tbh. For one, he’s going to be hamstrung by whatever Warner decides is the goal. For another, he’s going to end up limited by whatever flawed view executives have of the servers characters. And then he still may not have a grasp of what either comics fans or non comic fans need from a movie featuring DC characters.