I have, since the early days of my prepping, once out of high school, realized that community would be necessary for long term survival in a post major disaster event life. And, with pre-history being one of my favorite subjects, found myself gravitating toward a tribal type community. I think it will be what occurs, intentionally or not, after any really major event.
From a few years to many years later, the smaller tribes will begin active cooperation and coordination with others, which will eventually, here in the US, bring us to the point where a republic will once again come into active being, even if there has been one in name all the time, but ineffectual.
I pretty much see myself in the role of an elder of the tribe, mediator, advisor, confidant, and sounding board to the leader(s).
Just my opinion.