Apart of Iran what other state could have become the de facto political center of shia islam? In otl the other shia majority regions are small periphery in countries dominanted by other fates, and the only three shia countries apart of Iran are: small in population and territory and only recently governed by the shia majority (or in Bahrein not even that).
I was thinking what if Iran remained sunni majority while shiism is confined to ethnic minority areas like Azerbaijan, Khuzestan and Tabaristan, and other place becomes alt Iran (only relevant shia bastion with lots of influence over shia minorities around the world)? Maybe a region of India (in case of diveded india), like the Bahmanis? Or Ismaeli Egypt? Keep in mind this is an escenario were sunni islam is hegemonic like in otl, thats why the shia bastion has so much influence. Also remember that modern twelver shiism is mostly an iranian product being the only independent shia society, so things like the 18th century clerification of the mullahs was a product of Iran historical circunstances, if other place (especially if other shia current is the dominant one) is the center if shiism than things may go differently.
I was thinking what if Iran remained sunni majority while shiism is confined to ethnic minority areas like Azerbaijan, Khuzestan and Tabaristan, and other place becomes alt Iran (only relevant shia bastion with lots of influence over shia minorities around the world)? Maybe a region of India (in case of diveded india), like the Bahmanis? Or Ismaeli Egypt? Keep in mind this is an escenario were sunni islam is hegemonic like in otl, thats why the shia bastion has so much influence. Also remember that modern twelver shiism is mostly an iranian product being the only independent shia society, so things like the 18th century clerification of the mullahs was a product of Iran historical circunstances, if other place (especially if other shia current is the dominant one) is the center if shiism than things may go differently.