I forgot to say what I think their attribute will be Zhezhi - Aero makes the most sense but wouldn't be surprise if glacio Xiangli Yao - Electro is the logical outcome 100%
A reason they're pushing back Scar and Camellya to a later patch is probably because they don't want to disapoint the fans and make them support characters but they also don't want to release 5th and 6th DPS/Sub Dps characters in a row since launch. We've only gotten Jiyan,Yinlin,Jinshi,and Changli with only Yinlin being a support like character and she still does a crazy amount of damage so Kuro needs to add proper supports in patch 1.2.
ayo if that arm turns into a buster cannon or energy blade Megaman style or as the description goes he pops in a bunch of turrets as an off field or commands a bunch of drones with it esle mass skip(again) also where the children? need moar for my army of cute adorable death reapers :c
For me, it'll depend on what we see of them in the story. I am a husbando appreciator, so Mr Xiangli is possible, but there's also sussy rumors that he'll be given out for free, so... In regard to Scar and the others, I'm also waiting for them, but I'm also glad they'll let them cook a bit more. It'll depend on the final outcome.