I see several things wrong with this.
Firstly, and I’m not sure if you glossed over this intentionally or not, the living standard for the groups would drop, immensely. On the short time scale, the medical attention that would and could be provided to every member of the group would be miserable compared to the current standards of western society. Your groups would be decimated in the first few years. Depression would be rampant, too. But let’s assume these people had never experienced the wonders of modern medicine or social networking (in the broadest sense of the term). Several years into it, the means of sustenance would probably become much less diverse, leading to further health issues. On the order of magnitude of a decade, the means of communication inside of the groups would change enough to make communication between the groups difficult. Poor communication would lead to conflicts, allying and wars. How would that be different than the course of history we’ve already seen numerous times? Maybe I misunderstood.
Regardless, as much as I’m flattered by the compliment — and before you take my word as gospel — I’m far from a social scientist. I work in quantum information theory, and I find research in psychology, sociology and social dynamics to be fascinating (as well as some other fields!), so that’s some of what I browse through in my free time. I have a penchant for scientific work that’s out of the norm and surprisingly interesting or, as in this case, that which should have been included in general education curricula a long time ago.
It’s fascinating to see how many books and media dedications there are to — let’s say — the Higgs’ boson, even though it doesn’t affect the life of a regular human being by any margin… but when it comes to exceptionally useful topics in psychology, medicine, law, economics, … If it has a complex practical application in a person’s life, it wasn’t a part of their curriculum. Or at least not of mine.