I dont mean to get nasty but if you read at the top of the factions list it says "the lists are incomplete" i havnt decided on many of the factions yet, still doing research to find more for both the islamic and american regions. The Far East also only has 4 factions to date. America will have at least 2 more factions representing natives of north america.

Probable near addtions:
Portugal
Egypt
Crow (North American Tribe)
and another american tribe

Suggestions are welcomed... still alot of the potential factions depend on the rumoured 30 factions count for M2TW, 30 factions would make the mod that much more interesting.