I think this would make a great topic. I have lots of information in Books about the Scythic Buddhist relics left in Afghanistan and Northwestern Pakistan, Kashgar, etc. There was a merging of Sassanian art and Buddhist Art. I will show pictures and type out of some of these splendid works that have been found in this region. One of the articles I found was a script written in the ancient Bactrian language, that was then translated by Scholars.
Your thoughts on Buddhism in Iran, could it be revived?