I'm playing through the 2.2 story now and noticed something in the cutscenes that seems interesting.

Yugiri has the same animations as Miqo'te, though this is likely because the dev's didn't want to create a unique set of emotes for one character plus she uses the same body model. Also, whenever she turns her head sharply her "horn/ear" hood thingies flop about. Which makes me think that they are indeed ears and not rigid like horns. I'm certainly curious what she must look like.