4. Action
The fight scenes in Arrow are really top notch. They don't spare expense on the choreography, and many of the action scenes wouldn't be out of place in blockbuster movies. While Jim Gordon may not seem like a natural action star, he has been known to kick ass in the comic books when needed. In Frank Miller's Year One he easily beats up former Green Beret turned dirty cop Arnold Flass, casually throwing Flass a baseball bat to give himself more of a challenge. A cop show would give Gordon plenty of chances to show off his hand-to-hand skills.