You know me, I'm pro federalization.
The fear of "disintegration" is understandable, but in the same time, as it's not happening, heavy centralization are going to be a huge problem. Soon Iran would look like a place with 90% in the capital region where the government would struggle to organize and provide them minimum needs like water, whereas the rest of the country would be left in ruins. After some time the center would also turn into chaos because it could not take all the population. So the current path is going towards a deadend.
The fear of "disintegration" is understandable, but in the same time, as it's not happening, heavy centralization are going to be a huge problem. Soon Iran would look like a place with 90% in the capital region where the government would struggle to organize and provide them minimum needs like water, whereas the rest of the country would be left in ruins. After some time the center would also turn into chaos because it could not take all the population. So the current path is going towards a deadend.