Ok my other computer is occupied atm., so no screenies for now.
But as soon as I have control over it, you shall receive both, screenshots and files.
Since I am bored now I will outlay the techtree anyway (got it on a sheet of paper right at my site; I know thats quite antique, but well ...)
I used the same followup techtree as for all the other factions btw.
Seafaring (Arabian Galley) ---> Sailing (Arabian Dhow) ---> Sea Trade [Muslim Scolarship] (Port +1 Trade) ---> Piracy [Gunpowder] (Arabian Corsair)
--------------------------------^--------------------------------------------^-------------------------------^
Fishing (Port +1 Food) -----------'---------------------------------------------l--------------------------------l
------------------- Sharia (Qadi) ----------- Succession (Caliphat) .------------l--------------------------------l-- Ottoman Contact (Musketman)
-----------------------.l-------------------------l------------------------------l-------------------------------'------,--l
Islam (Mosque) ---> Hadith (Imam House) ---> Koran Schools (Madrasa) ---> Muslim Scolarship (Islamic University) ---> Gunpowder (Cannon)
-------------------------------,-----------------^------l
Local Trade (Bazaar) ---> Foreign Trade (Halberdiers)-----'--------------------------> Fanatism (Bowman) ---> Assassin Order (Assassin)
------------------------------V-----------------------------------------------------------V
Military Tradition -------> Slavery (Slavequaters) ---> Mercenaries (Sanhaja Raider) ---> The Gaziya (Arabian Knight) ---> Camelriders (Mamluks)
(Spearman, Swordman, Ansar Warrior)
So whats new besides the Techs?
a.) Arab Knight (I would even call it "Saracen Faris"), which can be seen as the follow up mounted Unit after the Ansar Warrior.
So if we use the Arab Knight for the Arab factiosn, we need a new mounted unit for the Nubians!!! The Ansar Warior would be one possibility, but I'd ratehr use it for the Fatimids as UU.
b.) Camels as a resource to build Sanhaja and Mamluks
c.) To build Mamluks one also needs Slavequaters in the respective City
c.) Building "Quadi" to lower corruption
d.) Fishing Port (+1 Food per square) and Trade Port (+1 trade per square, it also upgrades ships)
e.) Dhows and Corsairs can transport 2 Units now.
f.) The slavequaters, produce African slaves(one every x turns), require tribes as ressource or even in the city radius.
g.) One final idea for now. The number of Imam houses could be limited to some degree, but the Imams could be leaders of a single Unit, to strenghten it. So its a minor Army that can only hold 1 unit. e.g. Imam plus Arabian Swordman. Some changes to the Imams stats could be useful in this case.
Whats missing?
a.) Maybe a Wonder or two for the arabians to build (Mainly great mosques come to my mind atm.)
b.) A real Aim for the Arabian factions (Maybe the succession wars or vicotry points through who controls most of the holy cities e.g. Macca, Madina, Dimasq, Al Quds[Jerusalem], etc.)
c.) Maybe a bigger map???
d.) Maybe a Berber unit for the Maghrebinian Arabs and a Beduine Unit for the Yemenites
e.) Maybe one or two more Arab factions for the succession war (fatimids?)