Ok i am late to the party here but after reading Sera`s bio i can`t wait to meet her she sounds awesome .
She does. 
I've been looking forward to her for quite some time, but the more I learn about her, the more I'm looking forward to meeting her as my Cadash Inquisitor.
Hey, it worked with Aveline and Isabela, which is actually one of the friendships I referred to earlier.
Oh yes, especially by Act 3. Aveline brought out a sweet and surprisingly shy side out of Isabela. I hope to see more friendships like that in DA:I. I think that Sera is going to make Cass laugh almost against her will. Cass tries to be a stick-in-the-mud, but I can see Sera making it a point to get Cass to crack a smile, or let out an unguarded laugh.