I really hope Chasca is a good Anemo DPS. I've been doing ok with Cloud Retainer, but plunge is an exhausting way to play, and I dislike XIao/Wanderer, so this could be nice for my account if she's functional.
That said, based on existing Natlan characters, It's probably gonna be some slow as fuck gimmick attack. Hope to be proven wrong though.
Dude is probably a 4* and will just end up in that "male 4* dps" bucket that nobody talks about.
Yeah, they probably chose them to fit thematically with the Sumeru festival. I prefer characters that actually work with the featured 5-stars on a banner, but in this case it works out for me.