Between her being decidedly "not culturally elven," caring about the concerns of "the common/poor people in general" but not elves, her being very anti-nature, having a much fuller face than the average angular elves and now much taller than elves, I wonder if her shtick is going to be that she's elf in genetics only. She has pointed ears, and that's it. Everything else about her, from her height to her features to her background to her values and goals are going to be deliberately anti-elf in every way.
Gee BioWare, haven't seen that before. A city elven companion that not only feels no kinship to city elf culture, but doesn't feel attached to or care about other elves in general? Zevran of the Antivan Crows and Fenris the Tevinter Slave, both of whom takes shots at the Alienage and Dalish Camp, feel no kinship to other elves, and claim everyone has problems / other people have it worse, so why care about these people in particular. Yeah, never seen any of that in a city elven companion. Sera is going to be new, different, and unique in that respect.
She and my Dalish Inquisitor are going to have a lot of common ground, I just know it.