I suggest a few more things:
3-the Autonomoi need a new captain/ general.
4-do like EB, and set faction goals (not the conquer 50 prov. BS). that is far more fun, and less tedious AFAIK.
5-when nomad arab auxiliaries (not the city poeple) are made for Saba, please make sure you follow the guidelines in the following website:
http://forums.totalwar.org/vb/showthread.php?t=102576
I'm fed up with inaccurate tailormade clothing in every mod with the Arabs in it...this is all the product of research, from a book on pre islamic dress (also arab dress in general.). as for the sabaen city poeple, I dunno.
EDIT: the Arbs are in this case from the northwestern section of the penninsula