Damn, I just lost my post explaining!
To shorten what I was going to say:
Yeah, we could all be called mercenaries, but their split into certain specializations of mercenaries and that faction mercenaries just best describes what they are used for, the other factions are not really fluff, some are more useful then others, but they are all definately going to be used
The descriptions also needs to be updated, which I will do later this month along with my announcements (maybe sooner). The ones you see now were kept as general as possible, since when they were made (around may 2002 probably) I knew very, very little about PS (and still, it has to be kept pretty basic until Planeshift is further along, but we have plenty ideas on how to make each faction work)
I may edit this later to make it more clear, but now I\'m mad I lost my post!
