Well, we’re getting three live-action series within roughly three years, and the Coruscant underworld is getting explored more and more in cartoons and other EU materials, so i’ts definitely a possibility. And although main-stream SWhas never touched upon noir in any blatant fashion yet (maybe a little bit in ep. II?) it still fits within that movie-serial-vibe that’s its all based on.
PS. There was a book series called Coruscant Nights which is basically a noir private-eye type of series set in the lower levels of Coruscant during the early days of the Empire.