well, i guess that in the east. practically every Faction can raise Pandotopoi..sinc ethey are very basic. and the units "sauromatae" woudl rais ein Africa will probably not differ very much from what romans can (in troop type) but just not as differse...
[/mode=speculating]

but it is indeed a weird issue, becuase if it's not treated 'good' factions could, quite possibly, not expand much further than they 'historically' did...