I just finished watching the first season of "Bosch" on Amazon Prime Instant Video -- I came away from that series thinking that it was the perfect template for exactly how Repairman Jack should be brought to the screen.
Forget feature films -- RJ needs to be a television series just like Bosch.
Rather than solve a crime every episode, like most TV police procedurals, with Bosch, they combined two of Connelly's novels into a storyline that threads its way through the season's ten episodes. So you have the main character working on two cases that might be related, deftly woven among subplots involving his girlfriend, his daughter, politics inside the police department, and the city's mayoral campaign. So there's a richness and depth to the story telling and character development that you just don't have time for in a feature film. This is what "The Killing" was trying to do, but failed.