I would argue Iran already enjoys a level of “peripheral” representation that India and China do not. If you view Iran as the imperial core then there are several groups that already have been in the game which existed in the orbit of an Iranian empire, fought against, or controlled all or part of Iran at various times:
- Macedon was a persianized satrapy at the western edge if Persia’s empire, and conquered the whole empire.
- Assyria was the Persian’s ancient foe. Cyrus led a coalition of nations to defeat and destroy them, which was the beginning of Persia’s imperial presence in Mesopotamia.
- The Romans and Byzantines fought bitterly with the Persians for control of the Middle East for centuries.
- the Arabs conquered all of Iran and incorporated much of the Sassanid culture, architecture, and administration into their own newly formed empire.
- The Ottomans, a heavilly persianized and Arabize Turkic group, were constantly fighting the Persians after the reemergence of Iranian self-rule by the Safavids.
For China, the only equivalents are Japan, who did manage to conquer almost all of China in the 20th century, and Mongolia (but Mongolia conquered Iran too, so that’s a wash). Maybe Korea, the perpetual satellite and tributary, if you’re feeling generous.
For India, the closest thing you have had in any game is England.
I have also seen two other thoroughly persianized groups make it onto some peoples lists, like the Gurkhani/Mughals and Afghans/Durrani.
So no, I don’t think Iranian history is particularly underrepresented, or their situation is Comparable to India and China.