[quote=@MetalLover]
<Snipped quote by Dutchbag>

Well it was the arabs that took majority of Byzantium anyway. 
Tho if you want a Shiafest just have a reborn Fatimid Caliphate.
[/quote]

Nah, the Shiafest should come with Iran since Shia Islam is an integral part of Iranian Nationalism. You can't just Shi'ize the Sunni Arabs, either. Might as well go full Khawarij then.