Ugh. As much as I wanted at least one followup to SR, I don't really have a problem with a fresh start. But "dark and brooding"? Isn't that the complaint most people already had with SR?
I had the opposite complaint: that the film, amongst its many other faults, was corny, cheesy, and all-around impossible to take seriously. A dark Superman could work; my favourite version of the character is the JLU version, seasoned and perhaps a bit world-weary for it, concerned with the dynamic between his power, his notion of justice, and the free will of others. But then, my favourite 'Superman' concept is JMS' version of Hyperion in the Supremeverse, which squarely situates an entity of such power into the realpolitiks of the modern world.
Fictitiously yours, Trent Roman