You understand why those suburbs were created, right? It's not because people don't want to live in the city close to everything, it's because the city core has decayed and become a criminal hellhole, where the nice areas are unaffordable and the affordable areas are not safe to raise a family in.
Autonomous Zones are only going to make this worse.
You are talking like either the movie RoboCop or as if the 1980s crack epidemic were still in swing. A lot has changed since violent crime started declining rapidly in the mid 90s.
Autonomous Zones are only going to make this worse.