I like it. But such a utopia cannot be realized until there are robots to do all physical work, correct? Is this a vegetarian utopia? What starting population would be needed? What about crime (does that just lead to exile)? What about immigration? Land size? Climate?
I had originally included some directives on these subjects but cut back.
The first utopia will not be vegetarian. That will be an option for a future one. There will however be no reason for pain or cruelty to animals. Anyways meat can be grown in labs.
Policing will be volunteer based, however the AI over the utopia will prevent most crimes. Police will be volunteers, but those who are doubting the reality of society will be encouraged to try police work over exile. The police will hopefully become more like Psychologists than beat cops, but they will also act as detectives and to some degree as journalists. They will be in a position to keep the populace informed if something should go wrong. They will be in less of a position to act like modern police. With the AI watching they won't have much opportunity to intimidate.
Police will patrol the utopia but also some exilic areas. Some exilic areas will not be patrolled. There will always be places that are unwatched, and that's to keep Utopia a happy place and maintain autonomy for people. I expect a lot of people will choose exile for long periods of their lives.
Crime will not be handled with exile. It will simply isolate individuals, and they will have a record. Remember that Utopia is already a type of prison. Most people just won't have the opportunity to commit crimes in the utopia. This is a watched society, monitored by a non-human AI intelligence. They can leave if they wish.
Land size is infinite. Climate is whatever the weather does but very nice when indoors. Immigration is not a factor, because anyone may join or leave Utopia.
In the event that exiled areas become too hostile, more can be created with the creation of a new utopia. That forking event can fix a lot of problems.