Utopias and utopian ideals are abundant in fiction, but they're often either fuzzily-explained or not actually functioning utopias.
As a premise, I was wondering if some mode of compelling people to share their experiences and perceptions would be a necessary prerequisite for any utopia to work.
It doesn't really matter what the technology is behind it: a hive mind; a magical system that switches people's consciousness between different bodies on a daily basis; some kind of modern technology that requires people to upload their own perceptions and experience others'...
By obliging people to experience what others do (with full perception - sight, sound, smell, emotions, etc.), surely there would be no room for mercenary behaviour or narcissism? It would be very difficult to implement such a system, but if we're talking about a 10th generation of this system, where this is simply as ordinary a part of existence as breathing, can you see any immediate reasons why this wouldn't work in a utopia?
What if it weren't compulsory? If people had the ability to (mutually) agree to share perceptions, would that get any closer to achieving a utopia? (Perhaps with an exceptional case made in court hearings or something??)
Imagine going to the doctor unable to articulate exactly what was wrong, and having a medical professional understand exactly what was happening to you. Or (maybe idealistically) being able to offer a wealthy politician a more full understanding of what life as a working class individual? Hopefully that would still encourage individuality and freedom of expression, while also helping to soothe some voices of dissent ("you just don't understand!!") by actually allowing them to communicate how they feel.
(It's really helpful to see the kind of problems that this utopian/dystopian society would run into - and see if there are any problems that can be worked around.)