Interesting! And yes I guess travel to Iran will definitely pick up over the next couple years.
I encountered a Mahan Airlines crew at BKK last year – they were so lovely, chatty, hospitable and seemed very genuine. I did remark to one of the male cabin crew how I was envious that they were able to go about their duties without a uniform tie. Only then I discovered that they are frowned upon in the workplace (although he did say most Iranian men still ‘dressed up’ and chose to wear ties to personal occasions such as weddings/parties etc).