My idea for an emerging faction is an obvious one that should be helpful at countering Egypts complete dominance which it enjoyed in Rome Total War.

Emerging faction-Judea

Case for it-If somehow the Selucids aren't destroyed by Egypt it means against all odds they won that fight and needs a major crisis to prevent it from turning the campaign into a 2-3 nation campaign too early (don't you remember how none of your campaigns had many enemies? It became you good Romans or whoever you picked vs Egypt by the end for me at least). It should start as a Vassal of the Romans, but have relatively low actual loyalty and likely to backstab (if Romans are interested that means they are winning and need a problem, luckily this is historical :-) ).

If Egypt is winning they need to be prevented from repeating Total War History, and good way to slow them down is to sick the a historical emerging factioin on them.

History Case for it-Immortalized in a modern Jewish Holiday the Jews rebelled against the rule of the Selucids for a wide variety of reasons. The result was a very long war where both sides failed to achieve decisive victory, untill the Romans stepped in and recognized Judea, and untill a Selucid Civil war put the patch of land being fought for into perspective.

Units-I am not an expert in Jewish history, I have no clue what units they would be given, perhaps the Jewish Zealot like in the original Rome Total War?

I apologize for the poor presentation, and for appearing to be asking for a minor faction for gameplay reasons, and I further apologize to anyone who may be so thin skinned he/she/it is offended for any reason.