Would be cool to get a sequel, starring just Hibino running around solving crimes ... and occasionally getting hints and help from the guys.
That setup worked well for Ghost in the Shell: Innocence, allowing Batou to do all the legwork, and letting the Major stay mysterious, hidden, and generally uninvolved. A similar setup is also what allows Detective Conan to drag on for hundreds of chapters - dozens of otherwise unrelated crimes and puzzles build up towards new altercations with the Black Organization every hundred chapters. It would probably be able to last a long time, just tracking clues toward Ikuo and Tatsuya, and racing against them to corner the criminals related to Mahoroba.
Mostly, I just want to see Hibino be a badass straight cop, with Assistant Commissioner Tachibana as the badass boss, and Tatsuya and Ikuo being badass assassins doing mysterious stuff in the background.