I vote for the Hasmoneans/Judeans. Totally the wrong time I know- didn't Judah Maccabbee (sp?) kick Seleucid butt around 160 BC? But still I think a small but strong faction between the Seleucids and the Ptolemies would be interesting. Phalanx vs. Phalanx can be pretty dull sometimes. Though I have no idea what kind of units a Judean faction would have- probbably Phalanx. Maybe Zealots. Lots of light infantry skirmishers anyways.