I found it very hard to read the excerpts without the filter of looking for differences. Does that make sense? It's been eons since I read the books, and can't even really remember plot details, particularly at the beginning, but still, I was searching for them. I don't know when, as a reader, I became annoyed with Bella's character, but I'm sure it wasn't in the first two chapters. (I don't have that kind of patience.) Did Beau ring true? Kind of? Again, it was hard to read objectively.
One thing I did find interesting, which I wasn't expecting, was that *other* characters had gender-flipped. (And feel free to correct me if I'm wrong!) Wasn't Dr. Cullen male? But now he's female? Wasn't sexy werewolf's parent a dad, now it's a mom?

To me, these things should also influence a character, to whatever degree, and just gender-swapping isn't enough. I think this relates to EAB's post. So, now, it's not just Bella/Edward swap, but the entire development of characters. I have NO idea how this will be developed and/or addressed. I mean, at the very base level, a boy might have a very different experience being "in charge" in a single-mom household than a daughter would -- and that boy might have a very different experience suddenly thrust into a new relationship with a father.
How will these differences affect the writing, the characters, the plot structure? I don't know.
But I am more curious to find out.