[@MissCapnCrunch] given the way Sanctuary was never even intended to be a game in the first place I kind of see clans being a player invention rather than something intentionally added. They clearly added support for clans later on since clan ships are a thing and are limited to one per clan, but I see that as being a response to something the players were already doing, i.e. grouping up and forming factions.

Clan size is probably limited by how much living space your ship has so unless you can get something like a Star Destroyer or a Battlestar you're going to be pretty limited. I imagine something like the Millenium Falcon, Serenity or the Bebop would be more the norm and those things have space for maybe a dozen at most.