I don't think X-23's past is the most interesting thing about her, but it's not like she can escape it, either.
It's great we have a female Thor. It's great we have a black Captain America. But those are just optics; it's optics of change... Unless you have the structural diversity, the structural change behind the scenes - more women, more people of color actually calling the shots and editing these books - those optics won't last.
There are many different ways to express intimacy - a look, a touch - and I think it enriches the characters and stories when you create those moments and then build on them.
I don't write fight scenes in comics all that well. I think they're a waste of space unless they can move a story forward in some compelling fashion. You've only got twenty-two pages to work with. Why throw that away on a set of meaningless punches?
As a writer - and a romance novelist, no less - I've always found it a bit odd when characters in comic books remain in relationship limbo for years at a time.
I think we worry way too much about where books should fit inside genres. In a romance, the hero and heroine are on a journey together, and no matter how awful it gets, by the end of the book they'll be in love, with the probability of a happy ending.