I don't know if it's due to CG cinematic limitations, or if it's somehow significant, but I did notice just about every (humanoid, non-Scion) NPC in the cinematic trailer was wearing either voluminous red robes that remind me of what Gogo wears (both in the original FFV and FFVI, as well as the BLU instance in FFXIV), or a white shirt with suspenders that have a zillion shared models among crafting gear.

I noticed it because it was common to the point of looking like some sort of uniform, so I wondered if this is a uniform. Maybe indicating "people from Yok Tural" and "people from Xak Tural"?