I love this idea sooooo much. I long for a place with aesthetics based on a real world cultures. MoP, as you have mentioned yourself, is a great analogy. Arabic vibes would be absolutely awesome. I think, personally, what I loved about Pandaria was it's exotic take on WoW - it's music, it's assets, it's inhabitants. Even the main theme was woven with "ancient philosophies" vibes and, let's say, finding "inner peace". That made possible for players to experiece more grounded themes. The whole idea of exploration of an ancient civilization, it's wonders and dark secrets - amazing feeling.
I think Dragonflight is trying to establish that "grounded" feeling again, creating, to a degree, a template upon which players' satisfaction is being measured and tested. And as far as I have seen it's pretty much successful in these terms.
I remember when Kyrian art was leaked before Shadowlands expansion was revealed, I was convinced they will go for the Greek culture for the entire expansion. Now I wish they went this path - pantheon of some powerful beings based on the greek pantheon, the River Styx counterpart as a central part of Shadowlands by which you enter 'the Maw' which basically could have been Hades. I'd love to see some major seasonal content feature revolving around "Olympic games". All the myths could have been so easily incorporated as side storylines there. Even "Oracle of Delphi" could have been such a nice addition to build up some speculation hype around 'prophecies'. But well, I guess it is what it is