With the recent inscription of historic city of Yazd as a UNESCO World Heritage Site, I am not quite sure how Maybod, another silk road desert city in the same region, would be able to position itself differently and subsequently provide a fresh perspective or OUV to the prestigious list.
Highlights of the old oasis city include the 2,000 year old Narin castle, an intact ice house, working qanats, a few badgirs (wind catchers), what is perhaps the most beautiful dovecote in all of Persia, and the Shah Abassi caravanserai, which also happens to be a component of the Persian Caravanserai – TWHS and quite possibly a part of the Silk Route – TWHS of Iran as well.
Interestingly, I have observed that inscribing a site more than once seems to be something that Iran enjoys doing. This can be seen with the following: Pasargadae – Persian Garden; Yazd – Persian Garden – Persian Qanat; Bam – Persian Qanat; as well as many others still brewing in the tentative list. Maybod can easily be reached as part of a regular day tour offered in Yazd.