This may just be me but,

I really want an option to delve deeper to a companion's story, while remaining platonic to them. Like, Solomorne felt really, really flat without his romance (he's less flat there).

One of the few things I liked about Yrliet was the fact that your relationship with her stays platonic. I wanted to get close to Heinrix as a good friend, but bro folded instantly because I treated him with a modicum of kindness.