Since I do not believe that factionalization is within the scope of the game, though it would be nice if I was incorrect, my answers will change if that comes to fruition.
I will accept contracts from the following factions: Marik, ComStar, Liao, Davion (only because Victor does not exist yet), Taurian Concordat, No Faction, and Magistracy of Canopus. I will also very happily accept contracts that allow me to commit maximum possible harm against Lyran or Aurigian (Directorate or Restoration) forces/interests.
I will not accept contracts from any Aurigian faction, or any contract that attempts to pit me against the FWL.