I think in many ways Mandalorian society would always be somewhat fractured. You have a culture made up of a bunch of "alpha type" personalities and they won't always agree on what is best for them as a people. If they disagree with the majority, they will strike it out on their own with like minded Mandos rather than follow meekly against their own wishes. What they do very well though is come together when their society as a whole is threatened. Seems very much like Ancient Greece to me.