I dunno. It would be a completely different story.

I don't know romance isn't my thing

I'm not really a romance person, but maybe with the improvements she would make, maybe I would like it

It would still have the same romance thign,so no!!!

Jo is an amazing amazing writer. But twilight? It'd still be the same vampire romance thing, Bella admiring Edward's God-like-Adonis-looks and Jacob's shoulders, and torn between her love for Edward and her liking for Jake, and then clashing with the Volturi and killing Victoria and all that and still, all the main characters (inc. Edw's family and Jake's pack) being unscathed, then getting married, pregnant, revealing that Edward is a vampire and he can still reproduce, and Jacob and Edward's 1-day old child...? Definitely not what I'd love to read.

I think she would have greatly improved it. I mean, Meyer can't write to save her life, so I think Rowling could have improved the plot and made the characters more interesting.