A playthrough will be a significant amount of time, and if I intend to to do one after the other I won't be able to be active in a guild because my limited game time will be on exploring the other Faction's land.
I understand the reasoning behind the decision to faction lock the territory; every player will have three games worth of land to explore, but will it harm the community in the end when players reach the point where they leave their first Faction in order to see the others?