Felicia: By far my favorite unit announced so far cause lol Waifu. Because she's a unit that will join in both sides, I'm expecting a really dynamic character out of her in terms of her loyalty and relationship with Kamui. We haven't heard much of her Blue-haired counterpart, I'm expecting their personalities to contrast differently, like her sister is loyal to Nohr but not Kamui. I expect a map or scene in the Hoshido campaign where Felica will face her sister or fellow maid where they really show how their personalities collide so differently. I'm also expecting her to have a complex relationship with Kamui, since they look roughly the same age, they might be childhood friends or she could be really close to him/her. The maid class sounds great, and if Mairrage comes back, I will waif her every playthrough.
Suzekaze: Another unit, I'm expecting to have a dynamic story. Since he hails from Hoshido, I honestly wonder how and just why he would side with Kamui. I highly doubt it, judging by the text we've seen, but maybe he's a distant friend of Kamui. It seems his design is to contrast to his other ninja's. Perhaps that's a point of contention with his fellow ninja's since he has no problem fully revealing his face, and he's probably a lot more laid back then other ninja's and his headpiece looks interesting, perhaps that's a key feature of his character. I also expect him to have an emotional fight with his other ninja brethren
Joker: I really like his design. I think his personality might be a mix of a really prissy neat-freak butler, and a smooth joker (Cause his name is joker hehehehe) I'm also wondering if he could be a potential childhood friend of Kamui like Felicia and him alongside Felicia and the butlers and maids could be his only friends outside of his family, because Kamui might have been sheltered from Commoners since birth.
Orochi: She's not talked about at all, because of the lack of info on her. We really don't know what class she is. She could be a mage or a Hoshidan version of a mage. I think she looks hawt and if Felicia didn't exist, I'd waif her. Personalty-wise, I'm expecting her to have a rather spoiled or snobby personality because she looks like a glamorous or rich person from ancient times. She might actually be some sort of spritual figure, because she does kinda dress like one. IDK, she's a mystery...