Fiction is full of characters that would make great additions to this game. It will never happen of course, but it's a nice waste of time on an idle saturday evening at work.
I'm not sure I'd stick them all in a separate faction, or in all factions, or in any one of the current factions, so I'll leave that (and points, because I suck at properly valuing abilities) open.
Paul Atreides
The main character from Dune, able to predict the future, with such precision that in Dune: Messiah he doesn't even need his eyes anymore.
Ship: M3-A Interceptor (how can we not put Muad'DIb in a ship named for a desert creature?)
PS: 7
Ability: You perform your Skip Action Step at the end of the activation phase.
EPT slot available: yes
In order to reflect his ability to see the future, we let him perform his actions after everybody else. He still has to commit to a maneuvre, but will be able to adjust.
Rand Al'thor
Main character from Wheel of Time, the strongest ta'veren (person around whom the pattern of destiny is bent).
Ship: TIE Defender (he is a bit of a brute and quite often uncontrolled)
PS: 8
Ability: Once per round, you may choose one action during the perform action step of an enemy ship at range 1.
EPT slot available: yes
The pattern shapes itself around him...
These are just two I thought up, I'll think of others, anybody any suggestions?