How would you make a good crime drama anime, /a/? Is it even possible?

Step 1: Be a good writer
Step 2: Write a good plot.
Step 3: Have somebody qualified turn the plot into a good anime script.
Step 4: Animate the shit out of that script.

>>160301399
Really depends on the angle you want to approach it from. Is it a detective story? Mob story? Something else entirely?

Then, of course, you have to add a little something extra to justify animating it rather than shooting it with real actors.